Pantlaza, Sun-Favored — ruling 1

The value of X is calculated only once, as the ability resolves. If the creature has left the battlefield, use its toughness as it last existed on the battlefield.

Pantlaza, Sun-Favored — ruling 2

Once you decide to discover using Pantlaza's ability, that ability will stop triggering for the duration of that turn.

Pantlaza, Sun-Favored — ruling 3

A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.

Pantlaza, Sun-Favored — ruling 4

When you discover, you must exile cards. The only optional part of the ability is whether you cast the exiled card or put it into your hand.

Pantlaza, Sun-Favored — ruling 5

You exile the cards face up. All players will be able to see them.

Pantlaza, Sun-Favored — ruling 6

If you cast a spell "without paying its mana cost", you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the spell has any mandatory additional costs, you must pay those to cast it.

Pantlaza, Sun-Favored — ruling 7

If the discovered card has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.

Pantlaza, Sun-Favored — ruling 8

If you can't cast the discovered card (perhaps because there are no legal targets for the spell), you'll put it into your hand.

Pantlaza, Sun-Favored : règles, fonctionnement et interactions (MTG)

Pantlaza, Sun-Favored 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 Pantlaza or another Dinosaur you control enters, you may discover X, where X is that creature's toughness. Do this only once each turn. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Complete guide

Pantlaza, Sun-Favored is the apex leader of the Dinosaur swarm, turning every new arrival into an opportunity for exploration. This legendary creature utilizes the Discover mechanic to chain spells together, ensuring your prehistoric army never stands alone. By leveraging the toughness of your Dinosaurs, you can quickly fill the battlefield or replenish your hand.

Unlocking the Discover Mechanic

When Pantlaza or another Dinosaur enters the battlefield under your control, you may choose to trigger its Discover ability. The value X is determined by that creature's toughness at the moment the ability resolves. You exile cards from the top of your library until you find a nonland card with a mana value less than or equal to X. You then have the choice to cast that card for free or put it into your hand, while the rest of the cards go to the bottom of your library in a random order.

The One-Per-Turn Limit

Pantlaza's ability contains a specific restriction: 'Do this only once each turn.' This limitation applies to the player, not just the specific creature. Once you choose to resolve the Discover process, the ability will not trigger again for the rest of that turn, even if you play more Dinosaurs. However, if you choose not to use the ability when a creature enters, you can still use it later in the same turn when a different Dinosaur enters.

Casting During Discovery

When you Discover a card, you are offered the chance to cast it without paying its mana cost. If the card has an X in its mana cost, X must be 0. You cannot use alternative costs, but you must pay mandatory additional costs. If you cannot cast the card—perhaps because there are no legal targets—or if you simply choose not to, the card is added to your hand instead of being cast, ensuring you never lose the card you found.

Strategic Timing

Because Pantlaza triggers on any Dinosaur entering, you can maximize your value by playing high-toughness creatures to hit more expensive spells. Remember that the ability checks toughness on resolution; if the creature is destroyed in response, the game uses its last known toughness on the battlefield to determine the Discover value.

Interaction examples

Doubling the Discovery

Roaming Throne

If you have Roaming Throne on the battlefield with 'Dinosaur' chosen as the type, and Pantlaza enters, the Throne causes Pantlaza's ability to trigger twice. However, because the ability says 'Do this only once each turn,' you can only actually perform the Discover action for the first trigger that resolves. The second trigger will do nothing.

Non-Dinosaur Interactions

Solemn Simulacrum

When Solemn Simulacrum enters the battlefield while Pantlaza is present, Pantlaza's ability does not trigger because the Simulacrum is a Golem, not a Dinosaur. You will still get to search for a basic land from the Simulacrum's own ability, but you won't get to Discover unless a Dinosaur enters later that turn.

High Toughness Chains

When Pantlaza itself enters the battlefield, it sees itself as a Dinosaur entering. Since its toughness is 4, you may Discover 4. You exile cards until you hit a nonland card with mana value 4 or less. If you find a 3-mana spell, you can cast it immediately, potentially swinging the momentum of the game the moment your commander arrives.

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

How it works : Pantlaza, Sun-Favored

Original English text — Wizards of the Coast / Scryfall

#1November 10, 2023· Wizards of the Coast
The value of X is calculated only once, as the ability resolves. If the creature has left the battlefield, use its toughness as it last existed on the battlefield.
No other card is named in this ruling.
#2November 10, 2023· Wizards of the Coast
Once you decide to discover using Pantlaza's ability, that ability will stop triggering for the duration of that turn.
No other card is named in this ruling.
#3November 10, 2023· Wizards of the Coast
A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
No other card is named in this ruling.
#4November 10, 2023· Wizards of the Coast
When you discover, you must exile cards. The only optional part of the ability is whether you cast the exiled card or put it into your hand.
No other card is named in this ruling.
#5November 10, 2023· Wizards of the Coast
You exile the cards face up. All players will be able to see them.
No other card is named in this ruling.
#6November 10, 2023· Wizards of the Coast
If you cast a spell "without paying its mana cost", you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the spell has any mandatory additional costs, you must pay those to cast it.
No other card is named in this ruling.
#7November 10, 2023· Wizards of the Coast
If the discovered card has in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
No other card is named in this ruling.
#8November 10, 2023· Wizards of the Coast
If you can't cast the discovered card (perhaps because there are no legal targets for the spell), you'll put it into your hand.
No other card is named in this ruling.
#9November 10, 2023· Wizards of the Coast
Some spells and abilities that cause you to discover may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve and you won't discover.
No other card is named in this ruling.
#10November 10, 2023· Wizards of the Coast
The mana value of a split card is determined by the combined mana cost of its two halves. If discover allows you to cast a split card, you may cast either half (as long as its mana value is less than or equal to the effect's discover value) but not both halves.
No other card is named in this ruling.
#11November 10, 2023· Wizards of the Coast
If you discover an adventurer card, split card, or modal double-faced card, you might be able to cast that card with either set of characteristics depending on the effect's discover value. For example, if you discover 4 and reveal Galvanic Giant (an adventurer card from Wilds of Eldraine with a mana value of 4), you could cast Galvanic Giant, but not Storm Reading (its Adventure, which has a mana value of 7). If you discover 7 and reveal Galvanic Giant, you could cast either Galvanic Giant or Storm Reading.
No other card is named in this ruling.