Jorn, God of Winter // Kaldring, the Rimestaff is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Whenever Jorn attacks, untap each snow permanent you control.: You may play target snow permanent card from your graveyard this turn. If you do, it enters tapped.
Complete guide
Jorn, God of Winter and his legendary artifact Kaldring, the Rimestaff, provide unparalleled utility for snow-themed decks. Whether you are untapping your board for a second main phase or recurring threats from the grave, this modal double-faced card is a cold-hearted powerhouse. Understanding how to manage these two distinct faces is key to freezing out your opponents.
Dual Faces of the North
Jorn is a Modal Double-Faced Card (MDFC). In your hand, graveyard, or library, it is always the front face: Jorn, God of Winter. However, when you play the card, you choose whether to cast the creature Jorn or the artifact Kaldring. Note that if an effect puts this card onto the battlefield without you casting it, it will always enter as Jorn, the front face.
The Untap Engine
When Jorn attacks, his ability triggers and goes on the stack. Upon resolution, every snow permanent you control untaps. This includes Jorn himself, snow lands, snow creatures, and even snow artifacts like Kaldring. This effectively doubles your mana if you tap your snow lands before the ability resolves, allowing you to use that mana in your post-combat main phase.
Recurring the Rime
Kaldring, the Rimestaff, allows you to tap it to target a snow permanent card in your graveyard. This doesn't let you cast it immediately as the ability resolves; instead, it grants you permission to play it later that turn. You must still pay the mana cost and follow timing rules—for example, you can only play a snow land during your main phase if you have a land play available. Any permanent played this way enters the battlefield tapped.
Common Timing Pitfalls
A common mistake is trying to play a land or a creature from the graveyard using Kaldring on an opponent's turn. Unless the card has Flash, you can only cast spells during your own turn. Additionally, remember that Snow is a supertype. While Jorn cares about snow permanents, non-snow cards like Solemn Simulacrum or Sakura-Tribe Elder do not gain the snow supertype and cannot be untapped by Jorn or targeted by Kaldring.
Interaction examples
Solemn SimulacrumYou have Jorn, God of Winter and five snow lands on the battlefield. You cast Solemn Simulacrum using four lands. You then attack with Jorn. While the attack trigger is on the stack, you tap your final snow land for mana. The trigger resolves, untapping Jorn and all five snow lands. You now have five fresh lands and one mana floating for your second main phase.
Sakura-Tribe ElderIf you have Sakura-Tribe Elder in your graveyard, Kaldring cannot target it because the Elder is not a snow permanent. However, if you had a snow land like a Snow-Covered Forest in your graveyard, you could tap Kaldring to play it, provided you haven't used your land play for the turn. The land would enter the battlefield tapped.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Jorn, God of Winter // Kaldring, the Rimestaff
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Jorn's triggered ability will untap Jorn itself.
No other card is named in this ruling.
- #2· Wizards of the Coast
A snow permanent card is any artifact, creature, enchantment, land, or planeswalker card with the supertype snow.
No other card is named in this ruling.
- #3· Wizards of the Coast
You don't play the card as Kaldring's activated ability is resolving; rather, that ability gives you permission to play that card that turn. You must follow the normal timing permissions and restrictions for the card when you play it. To play a land this way, you must have a land play available. Notably, if you activate Kaldring's ability during an opponent's turn, you won't be able to cast a spell that way unless it has flash and you won't be able to play a land that way at all.
No other card is named in this ruling.
- #4· Wizards of the Coast
You'll still pay all costs to cast a spell this way, including any additional costs. You may also pay alternative costs if any are available.
No other card is named in this ruling.
- #5· Wizards of the Coast
Even though you may play the card, it isn't in your hand, so you can't, for example, discard it or foretell it.
No other card is named in this ruling.
- #6· Wizards of the Coast
If you don't end up playing the card, it remains in your graveyard. You can't play it on future turns unless you target it again with Kaldring's ability (or something else lets you play it).
No other card is named in this ruling.
- #7· Wizards of the Coast
There is a single triangle icon in the top left corner of the front face. There is a double triangle icon in the top left corner of the back face.
No other card is named in this ruling.
- #8· Wizards of the Coast
To determine whether it is legal to play a modal double-faced card, consider only the characteristics of the face you're playing and ignore the other face's characteristics.
No other card is named in this ruling.
- #9· Wizards of the Coast
If an effect allows you to play a specific modal double-faced card, you may cast it as a spell or play it as a land, as determined by which face you choose to play. If an effect allows you to cast (rather than "play") a specific modal double-faced card, you can't play it as a land.
No other card is named in this ruling.
- #10· Wizards of the Coast
If an effect allows you to play a land or cast a spell from among a group of cards, you may play or cast a modal double-faced card with any face that fits the criteria of that effect.
No other card is named in this ruling.
- #11· Wizards of the Coast
The mana value of a modal double-faced card is based on the characteristics of the face that's being considered. On the stack and battlefield, consider whichever face is up. In all other zones, consider only the front face. This is different than how the mana value of a transforming double-faced card is determined.
No other card is named in this ruling.
- #12· Wizards of the Coast
A modal double-faced card can't be transformed or be put onto the battlefield transformed. Ignore any instruction to transform a modal double-faced card or to put one onto the battlefield transformed.
No other card is named in this ruling.
- #13· Wizards of the Coast
If an effect puts a double-faced card onto the battlefield, it enters with its front face up. If that front face can't be put onto the battlefield, it doesn't enter the battlefield.
No other card is named in this ruling.
- #14· Wizards of the Coast
If an effect instructs a player to choose a card name, the name of either face may be chosen. If that effect or a linked ability refers to a spell with the chosen name being cast and/or a land with the chosen name being played, it considers only the chosen name, not the other face's name.
No other card is named in this ruling.
- #15· Wizards of the Coast
In the Commander variant, a double-faced card's color identity is determined by the mana costs and mana symbols in the rules text of both faces combined. If either face has a color indicator or basic land type, those are also considered.
No other card is named in this ruling.
- #16· Wizards of the Coast
Snow is a supertype, not a card type. It has no rules meaning or function by itself, but spells and abilities may refer to it.
No other card is named in this ruling.
- #17· Wizards of the Coast
The
symbol is a generic mana symbol. It represents a cost that can be paid by one mana that was produced by a snow source. That mana can be any color or colorless.No other card is named in this ruling.
- #18· Wizards of the Coast
Snow isn't a type of mana. If an effect says you may spend mana as though it were any type, you can't pay for
using mana that wasn't produced by a snow source.No other card is named in this ruling.
- #19· Wizards of the Coast
Some cards have additional effects for each
spent to cast them. You can cast these spells even if you don't spend any snow mana to cast them; their additional effects simply won't do anything.No other card is named in this ruling.
- #20· Wizards of the Coast
The Kaldheim set doesn't have any cards with mana costs that include
, but some previous sets do. If an effect says such a spell costs 
less to cast, that reduction doesn't apply to any costs. This is also true for activated abilities that include in their activation costs and effects that reduce those costs.No other card is named in this ruling.
Popular combos
Real combos played by the community, sorted by popularity.
Jorn, God of Winter // Kaldring, the Rimestaff + Stasis
- 1At the beginning of your end step, Stasis triggers.
- 2Holding priority, activate a snow permanent by tapping it, adding at least
. - 3Resolve the Stasis ability, causing you to pay .
- 4Declare Jorn as an attacker.
- 5Jorn triggers, untapping each snow permanent you control.
- 6Repeat during each of your turns.
Jorn, God of Winter // Kaldring, the Rimestaff + Moritte of the Frost + Strionic Resonator
- 1Declare Jorn as an attacker, triggering its ability.
- 2Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least
. - 3Activate Moritte of the Frost by paying
and tapping it, copying Jorn's triggered ability. - 4Resolve the copy of Jorn's ability, untapping all snow permanents you control.
- 5Repeat from step 2.
Jorn, God of Winter // Kaldring, the Rimestaff + Rimefeather Owl + Strionic Resonator
- 1Activate Rimefeather Owl by paying , putting an ice counter on Strionic Resonator, causing Strionic Resonator to become a snow permanent.
- 2Move to your combat phase, and declare Jorn as an attacker, triggering its ability.
- 3Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least .
- 4Activate Strionic Resonator by paying and tapping it, copying Jorn's triggered ability.
- 5Resolve the copy of Jorn's ability, untapping all snow permanents you control.
- 6Repeat from step 3.
Jorn, God of Winter // Kaldring, the Rimestaff + Thermal Flux + Strionic Resonator
- 1Cast Thermal Flux by paying , causing Strionic Resonator to become a snow permanent until end of turn.
- 2Move to your combat phase, and declare Jorn as an attacker, triggering its ability.
- 3Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least .
- 4Activate Strionic Resonator by paying and tapping it, copying Jorn's triggered ability.
- 5Resolve the copy of Jorn's ability, untapping all snow permanents you control.
- 6Repeat from step 3.
Jorn, God of Winter // Kaldring, the Rimestaff + Moritte of the Frost + Lithoform Engine
- 1Declare Jorn as an attacker, triggering its ability.
- 2Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least .
- 3Activate Moritte of the Frost's first ability by paying and tapping it, copying Jorn's triggered ability.
- 4Resolve the copy of Jorn's ability, untapping all snow permanents you control.
- 5Repeat from step 4.
Jorn, God of Winter // Kaldring, the Rimestaff + Rimefeather Owl + Lithoform Engine
- 1Activate Rimefeather Owl by paying , putting an ice counter on Lithoform Engine, causing Lithoform Engine to become a snow permanent.
- 2Move to your combat phase, and declare Jorn as an attacker, triggering its ability.
- 3Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least .
- 4Activate Lithoform Engine's first ability by paying and tapping it, copying Jorn's triggered ability.
- 5Resolve the copy of Jorn's ability, untapping all snow permanents you control.
- 6Repeat from step 3.
Jorn, God of Winter // Kaldring, the Rimestaff + Thermal Flux + Lithoform Engine
- 1Cast Thermal Flux by paying , causing Lithoform Engine to become a snow permanent until end of turn.
- 2Move to your combat phase, and declare Jorn as an attacker, triggering its ability.
- 3Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least .
- 4Activate Lithoform Engine's first ability by paying and tapping it, copying Jorn's triggered ability.
- 5Resolve the copy of Jorn's ability, untapping all snow permanents you control.
- 6Repeat from step 3.
Legal formats
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