Search your library for up to four land cards with different names and reveal them. An opponent chooses two of those cards. Put the chosen cards into your graveyard and the rest onto the battlefield tapped, then shuffle.
"Understanding others, the other elements, and the other nations will help you become whole." —Iroh
I — Draw cards equal to the greatest power among creatures you control. II — Earthbend X, where X is the number of cards in your hand. That land becomes an Island in addition to its other types. III — Exile this Saga, then return it to the battlefield transformed under your control.
Flying When Aang enters, look at the top five cards of your library. You may put a creature card with mana value 4 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order. When another creature you control leaves the battlefield, transform Aang at the beginning of the next upkeep.
Flying, firebending 2 Whenever you waterbend, earthbend, firebend, or airbend, draw a card. Then if you've done all four this turn, transform Avatar Aang.
When the world needed him most, the Avatar returned.
Flying Spells you cast cost {W}{U}{B}{R}{G} less to cast. At the beginning of each upkeep, you may transform Aang, Master of Elements. If you do, you gain 4 life, draw four cards, put four +1/+1 counters on him, and he deals 4 damage to each opponent.
Firebending 2 When Azula enters, target opponent exiles a nontoken creature they control, then they exile a nonland card from their graveyard. During your turn, you may cast cards exiled with Azula and you may cast them as though they had flash. Mana of any type can be spent to cast those spells.
Trample When Bumi enters, earthbend 4. Whenever Bumi deals combat damage to a player, untap all lands you control. After this phase, there is an additional combat phase. Only land creatures can attack during that combat phase.
Trample When this creature enters, put a +1/+1 counter on each other Ally creature you control. Whenever another Ally you control enters, put a +1/+1 counter on this creature.
Firebending X, where X is Fire Lord Zuko's power. Whenever you cast a spell from exile and whenever a permanent you control enters from exile, put a +1/+1 counter on each creature you control.
Firebending 2 During your turn, each non-Lesson instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost. During your turn, each Lesson card in your graveyard has flashback {1}.
When Iroh enters, create a Food token. At the beginning of combat on your turn, you may have target opponent gain control of target permanent you control. When you do, create a 1/1 white Ally creature token. Put a +1/+1 counter on that token for each permanent you own that your opponents control.
Vigilance When Katara enters, create a 1/1 white Ally creature token. Waterbend {X}: Creatures you control have base power and toughness X/X until end of turn. X can't be 0. Activate only during your turn.
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.
Trample, firebending 4, haste If you would lose unspent mana, that mana becomes red instead. Ozai has flying and indestructible as long as you have six or more unspent mana.
Whenever you sacrifice another permanent, put a +1/+1 counter on this creature. When this creature dies, you may exile it. When you do, return target creature card with mana value less than or equal to this creature's power from your graveyard to the battlefield.