Avatar: The Last Airbender

Iguana Parrot | Creature | Lizard Bird Pirate | Flying, vigilance Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) | Tyler Smith

Invasion Submersible | Artifact | Vehicle | When this Vehicle enters, return up to one other target nonland permanent to its owner's hand. Exhaust — Waterbend {3}: This Vehicle becomes an artifact creature. Put three +1/+1 counters on it. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}. Activate each exhaust ability only once.) | Sylvain Sarrailh

Katara, Bending Prodigy | Legendary Creature | Human Warrior Ally | At the beginning of your end step, if Katara is tapped, put a +1/+1 counter on her. Waterbend {6}: Draw a card. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.) | Mephisto

The Mechanist, Aerial Artisan | Legendary Creature | Human Artificer Ally | Whenever you cast a noncreature spell, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}: Until end of turn, target artifact token you control becomes a 3/1 Construct artifact creature with flying. | Le Vuong

North Pole Patrol | Creature | Human Soldier Ally | {T}: Untap another target permanent you control. Waterbend {3}, {T}: Tap target creature an opponent controls. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.) | Rose Benjamin

Rowdy Snowballers | Creature | Human Peasant Ally | When this creature enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Mizutametori

The Spirit Oasis | Legendary Enchantment | Shrine | When The Spirit Oasis enters, draw a card for each Shrine you control. Whenever another Shrine you control enters, draw a card. | Slawek Fedorczuk

Spirit Water Revival | Sorcery | | As an additional cost to cast this spell, you may waterbend {6}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.) Draw two cards. If this spell's additional cost was paid, instead shuffle your graveyard into your library, draw seven cards, and you have no maximum hand size for the rest of the game. Exile Spirit Water Revival. | Enishi

Ty Lee, Chi Blocker | Legendary Creature | Human Performer Ally | Flash Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When Ty Lee enters, tap up to one target creature. It doesn't untap during its controller's untap step for as long as you control Ty Lee. | Gemi

Aang, Swift Savior | Legendary Creature | Human Avatar Ally | Flash Flying When Aang enters, airbend up to one other target creature or spell. (Exile it. While it's exiled, its owner may cast it for {2} rather than its mana cost.) Waterbend {8}: Transform Aang. | Tetsuko

Sokka, Lateral Strategist | Legendary Creature | Human Warrior Ally | Vigilance Whenever Sokka and at least one other creature attack, draw a card. | Axel Sauerwald

Foggy Swamp Spirit Keeper | Creature | Human Druid Ally | Lifelink Whenever you draw your second card each turn, create a 1/1 colorless Spirit creature token with "This token can't block or be blocked by non-Spirit creatures." | Airi Yoshihisa

Messenger Hawk | Creature | Bird Scout | Flying When this creature enters, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.") This creature gets +2/+0 as long as you've drawn two or more cards this turn. | Daniel Romanovsky

Dragonfly Swarm | Creature | Dragon Insect | Flying, ward {1} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.) This creature's power is equal to the number of noncreature, nonland cards in your graveyard. When this creature dies, if there's a Lesson card in your graveyard, draw a card. | John Di Giovanni

The Lion-Turtle | Legendary Creature | Elder Cat Turtle | Vigilance, reach When The Lion-Turtle enters, you gain 3 life. The Lion-Turtle can't attack or block unless there are three or more Lesson cards in your graveyard. {T}: Add one mana of any color. | Yuumei

Katara, the Fearless | Legendary Creature | Human Warrior Ally | If a triggered ability of an Ally you control triggers, that ability triggers an additional time. | Hisashi Momose