Conduit of Worlds — ruling 1

The first ability of Conduit of Worlds doesn't change the times when you can play those land cards. You can still play only one land per turn, and only during your main phase when you have priority and the stack is empty.

Conduit of Worlds — ruling 2

The second ability of Conduit of Worlds allows you to cast the target card as the ability resolves. You can't wait and cast that card later in the turn. If you cast it, you can't cast any other spells this turn, even if another effect would allow you to.

Conduit of Worlds — ruling 3

The second ability of Conduit of Worlds will count spells you cast earlier in the turn even if Conduit of Worlds wasn't on the battlefield or under your control at that time. It will also count a spell you cast that subsequently was countered or failed to resolve. Notably, it will also include Conduit of Worlds itself on the turn you cast it.

Conduit of Worlds : règles, fonctionnement et interactions (MTG)

Conduit of Worlds 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

You may play lands from your graveyard. : Choose target nonland permanent card in your graveyard. If you haven't cast a spell this turn, you may cast that card. If you do, you can't cast additional spells this turn. Activate only as a sorcery.

Complete guide

Conduit of Worlds is a powerful green artifact that turns your graveyard into a second hand, specifically for land cards and permanent threats. It provides both consistent mana development and a way to recur high-impact spells that your opponents thought were gone for good. By balancing its restriction on spellcasting, you can generate immense value every single turn.

Natural Resource Recovery

The first ability of Conduit of Worlds allows you to play lands from your graveyard. This follows all normal timing rules for playing lands: you can only do so during your own main phase, while the stack is empty, and only if you have an available land play remaining for the turn. This is exceptionally strong with cards that sacrifice themselves for value, ensuring you never miss a land drop.

Casting from the Grave

The second ability is a tap ability that targets a nonland permanent card in your graveyard. You may only activate this as a sorcery and only if you haven't cast any other spells yet that turn. If you choose to cast the target during the resolution of this ability, you are locked out of casting any further spells for the remainder of the turn. This includes the turn Conduit of Worlds itself was cast; if you cast Conduit of Worlds, you have already cast a spell and cannot use the tap ability until your next turn.

Common Pitfalls

A common mistake is forgetting that the restriction counts every spell cast earlier in the turn, even if they were countered or if Conduit of Worlds wasn't on the battlefield yet. Additionally, because the ability allows you to cast the card *as it resolves*, you must cast it immediately. You cannot activate the ability, let it resolve, and then try to cast the card later in the phase.

Strategic Timing

To maximize Conduit of Worlds, you should plan your turn carefully. Since using the tap ability prevents further spellcasting, you should activate it as your final major action, or as your only spell for the turn to recur a massive threat. Remember that playing a land is not 'casting a spell,' so you can still play a land from your graveyard before or after using the tap ability.

Interaction examples

Repeating Value with Solemn Simulacrum

Solemn Simulacrum

If Solemn Simulacrum is in your graveyard and you haven't cast any spells this turn, you can activate Conduit of Worlds to cast the Simulacrum. Upon entering the battlefield, you search for a basic land. If the Simulacrum later dies, you draw a card, and it returns to the graveyard where Conduit of Worlds can cast it again on a future turn, provided it is your only spell that turn.

Mana and Card Draw Loops

Commander's Sphere

You can sacrifice Commander's Sphere to draw a card, putting it into your graveyard. On your next turn, if you haven't cast any spells, you can use Conduit of Worlds to cast Commander's Sphere from your graveyard. This allows you to repeatedly draw cards and fix your mana every turn without using cards from your hand.

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Conduit of Worlds

Original English text — Wizards of the Coast / Scryfall

#1February 4, 2023· Wizards of the Coast
The first ability of Conduit of Worlds doesn't change the times when you can play those land cards. You can still play only one land per turn, and only during your main phase when you have priority and the stack is empty.
No other card is named in this ruling.
#2February 4, 2023· Wizards of the Coast
The second ability of Conduit of Worlds allows you to cast the target card as the ability resolves. You can't wait and cast that card later in the turn. If you cast it, you can't cast any other spells this turn, even if another effect would allow you to.
No other card is named in this ruling.
#3February 4, 2023· Wizards of the Coast
The second ability of Conduit of Worlds will count spells you cast earlier in the turn even if Conduit of Worlds wasn't on the battlefield or under your control at that time. It will also count a spell you cast that subsequently was countered or failed to resolve. Notably, it will also include Conduit of Worlds itself on the turn you cast it.
No other card is named in this ruling.