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Firebending X, where X is the number of creatures you control. (Whenever this creature attacks, add X {R}. This mana lasts until end of combat.) {5...

Suki's power is equal to the number of creatures you control. Whenever Suki attacks, create a 1/1 white Ally creature token that's tapped and attac...

{T}, Discard a card: Draw a card. {1}, {T}, Sacrifice Professor Zei: Return target instant or sorcery card from your graveyard to your hand. Activa...

When this creature dies, create a 1/1 white Ally creature token.

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 a...

{T}: Add one mana of any color. {T}: Add two mana in any combination of colors. Spend this mana only to cast Lesson spells.

Whenever Hei Bai enters or attacks, you may sacrifice another creature or artifact. If you do, put two +1/+1 counters on Hei Bai. When Hei Bai leav...

When Hama enters, target opponent mills three cards. Exile up to one noncreature, nonland card from that player's graveyard. For as long as you con...

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 n...

When this Equipment enters, airbend up to one target creature. (Exile it. While it's exiled, its owner may cast it for {2} rather than its mana cos...

When this creature dies, earthbend 2. (Target land you control becomes a 0/0 creature with haste that's still a land. Put two +1/+1 counters on it....

Reach This creature gets +1/+0 and has trample as long as you control a land creature or a land entered the battlefield under your control this turn.

Vigilance When this creature enters, put a +1/+1 counter on each of up to two target creatures you control.

Flying, ward {1} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.) Th...

When this creature enters, earthbend 1, then earthbend 1. (To earthbend 1, target land you control becomes a 0/0 creature with haste that's still a...

Flying Whenever this creature attacks, untap target artifact or creature.

Flying When this creature enters, scry 1. (Look at the top card of your library. You may put it on the bottom.)

Firebending 2 (Whenever this creature attacks, add {R}{R}. This mana lasts until end of combat.) When Azula enters, target opponent exiles a nontok...

When this enchantment enters, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.") Creatures you control with fly...

Reach, deathtouch When this creature dies, if there's a Lesson card in your graveyard, you gain 2 life.

{3}: Until end of turn, this creature has base power 4 and gains trample.

Create a 1/1 white Ally creature token for each Plains you control. Scry 2. (Look at the top two cards of your library, then put any number of them...

When Sophia, Dogged Detective enters the battlefield, create Tiny, a legendary 2/2 green Dog Detective creature token with trample. {1}, Sacrifice ...

When Toph enters, earthbend 2. (Target land you control becomes a 0/0 creature with haste that's still a land. Put two +1/+1 counters on it. When i...