Appa, Loyal Sky Bison — ruling 1

Since you are using an alternative cost to cast a spell from exile this way, you can't pay any other alternative costs. You can, however, pay additional costs, such as kicker costs. If the card has any mandatory additional costs, you must pay those.

Appa, Loyal Sky Bison — ruling 2

Lands exiled this way cannot be played from exile. (Lands that were animated by earthbend will be returned to the battlefield tapped when they're exiled.)

Appa, Loyal Sky Bison — ruling 3

Tokens exiled this way will cease to exist and cannot be cast.

Appa, Loyal Sky Bison — ruling 4

If the spell you cast has {X} in its mana cost, you must choose 0 as the value of X.

Appa, Loyal Sky Bison — ruling 5

To airbend one or more permanents and/or spells means to exile each of those objects. For each card exiled this way, for as long as it's exiled, its owner may cast it from exile by paying {2} rather than paying its mana cost.

Appa, Loyal Sky Bison : règles, fonctionnement et interactions (MTG)

Appa, Loyal Sky Bison 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

Flying Whenever Appa enters or attacks, choose one — • Target creature you control gains flying until end of turn. • Airbend another target nonland permanent you control. (Exile it. While it's exiled, its owner may cast it for rather than its mana cost.)

Complete guide

Appa, Loyal Sky Bison is a powerful Legendary Bison Ally that brings both evasion and strategic versatility to your deck. Whether you are soaring over enemy lines or using the Airbend mechanic to reset your forces, Appa is a faithful companion in any battle. Understanding how to utilize his Airbend ability is key to mastering his potential on the battlefield.

What It Does

Appa, Loyal Sky Bison has two main functions triggered whenever he enters the battlefield or attacks. First, he can grant another creature you control flying, allowing for powerful aerial strikes. Second, he can 'Airbend' a target nonland permanent you control, exiling it and allowing its owner to cast it later from exile for a reduced alternative cost of only two mana.

How It Resolves Step by Step

When the ability triggers, you choose one of the two modes. If you choose to Airbend, the target nonland permanent is moved to the exile zone immediately. While it remains in exile, its owner gains the permission to cast it. To do so, the owner follows all normal timing rules for that card's type and pays exactly two generic mana instead of the printed mana cost. Once cast, the spell moves from exile to the stack and eventually returns to the battlefield as a new object.

Common Mistakes

A common point of confusion is how 'X' spells work with Airbend; if you cast a card with {X} in its cost from exile, X must be zero. Additionally, remember that while you are using the alternative cost of two mana, you cannot use other alternative costs, though you may still pay additional costs like Kicker. Finally, be careful with tokens: if you Airbend a creature token, it will cease to exist once it hits the exile zone and cannot be cast.

When to Play It

Appa is best utilized when you have permanents with powerful 'enters-the-battlefield' effects that you wish to repeat. By Airbending a creature, you protect it from board wipes or targeted removal while setting yourself up to replay it for a significant discount, often generating massive value in the mid-to-late game.

Interaction examples

Repeating Value with Sun Titan

Sun Titan

If you control Sun Titan, you can use Appa's attack trigger to Airbend the Titan. By paying two mana to recast Sun Titan from exile, you trigger its 'enters' ability again, allowing you to return another small permanent from your graveyard to the battlefield.

Protecting Psychosis Crawler

Psychosis Crawler

When an opponent attempts to destroy your Psychosis Crawler, you can use Appa's entry trigger to Airbend the Crawler. The Crawler is safely moved to exile, where it stays until you choose to spend two mana to cast it again, keeping your engine alive despite your opponent's removal spells.

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

How it works : Appa, Loyal Sky Bison

Original English text — Wizards of the Coast / Scryfall

#1October 2, 2025· Wizards of the Coast
Since you are using an alternative cost to cast a spell from exile this way, you can't pay any other alternative costs. You can, however, pay additional costs, such as kicker costs. If the card has any mandatory additional costs, you must pay those.
No other card is named in this ruling.
#2October 2, 2025· Wizards of the Coast
Lands exiled this way cannot be played from exile. (Lands that were animated by earthbend will be returned to the battlefield tapped when they're exiled.)
No other card is named in this ruling.
#3October 2, 2025· Wizards of the Coast
Tokens exiled this way will cease to exist and cannot be cast.
No other card is named in this ruling.
#4October 2, 2025· Wizards of the Coast
If the spell you cast has in its mana cost, you must choose 0 as the value of X.
No other card is named in this ruling.
#5October 2, 2025· Wizards of the Coast
To airbend one or more permanents and/or spells means to exile each of those objects. For each card exiled this way, for as long as it's exiled, its owner may cast it from exile by paying rather than paying its mana cost.
No other card is named in this ruling.