The Duke enters with a +1/+1 counter on him. {T}, Remove a counter from The Duke: Put a +1/+1 counter on another target creature you control. It gains hexproof until end of turn.
Whenever Jet attacks, look at the top five cards of your library. You may put a creature card with mana value 3 or less from among them onto the battlefield tapped and attacking. Put the rest on the bottom of your library in a random order.
Vigilance Equipment spells you cast cost {1} less to cast for each Ally you control. At the beginning of combat on your turn, attach up to one target Equipment you control to Sokka.
Sokka mastered the sword like his friends mastered the elements.
Target creature gets +2/+2 until end of turn. Create a Clue token.
"The first thing you must learn is that your weapon is an extension of yourself. You must think of it as another part of your own body." —Master Piandao
This spell costs {2} less to cast if a creature left the battlefield under your control this turn. Search your library and/or graveyard for an Ally creature card, reveal it, and put it into your hand. If you search your library this way, shuffle.
Rain filled Appa's pawprint, and despair filled Momo's heart.
Put a +1/+1 counter on target creature. Put two +1/+1 counters on that creature instead if a creature left the battlefield under your control this turn. Draw a card.
Whenever another nontoken Spirit you control enters, create a 1/1 colorless Spirit creature token with "This token can't block or be blocked by non-Spirit creatures." {3}{U}: Exile another target creature you control. Return it to the battlefield under its owner's control at the beginning of the next end step.
You may cast the first creature spell you cast each turn as though it had flash. Whenever a nontoken creature you control enters during combat, draw a card.
To the Avatar, was the Blue Spirit a friend? A foe? Or something else entirely?
When this enchantment enters, return up to one target instant or sorcery card from your graveyard to your hand. Whenever you cast an instant or sorcery spell, draw a card. Then discard a card unless there are three or more Lesson cards in your graveyard.
Whenever one or more cards are put into a library from anywhere, put a +1/+1 counter on this creature. {3}: Put target card from a graveyard on the bottom of its owner's library.
Wan Shi Tong rewards those who provide rare and insightful tomes.
Whenever you cast a spell during an opponent's turn, you get an experience counter. Whenever Katara attacks, you may draw a card for each experience counter you have. If you do, discard a card.
"The strength of your heart makes you who you are."
I, II, III — Until your next turn, whenever you cast an instant or sorcery spell, target player mills cards equal to that spell's mana value. IV — Draw a card. If a graveyard has twenty or more cards in it, draw three cards instead.
When Princess Yue dies, if she was a nonland creature, return this card to the battlefield tapped under your control. She's a land named Moon. She gains "{T}: Add {C}." {T}: Scry 2.
Flying When Wan Shi Tong enters, target nonland permanent's owner puts it into their library second from the top or on the bottom. Whenever one or more cards are put into a library from anywhere, create two 1/1 colorless Spirit creature tokens with "This token can't block or be blocked by non-Spirit creatures."
As an additional cost to cast this spell, waterbend {X}. Exile X target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.