Nijihayashi

Herald of Eternal Dawn

Flash
Flying
You can't lose the game and your opponents can't win the game.

Flash (You may cast this spell any time you could cast an instant.)
Flying
You can't lose the game and your opponents can't win the game.

"I have orders to infiltrate Shinra headquarters and steal their ultimate materia."

Yuffie, Materia Hunter

Ninjutsu {1}{R} ({1}{R}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Yuffie enters, gain control of target noncreature artifact for as long as you control Yuffie. Then you may attach an Equipment you control to Yuffie.

"I want the Avatar. I want my honor, my throne."

Zuko, Exiled Prince

Firebending 3 (Whenever this creature attacks, add {R}{R}{R}. This mana lasts until end of combat.)
{3}: Exile the top card of your library. You may play that card this turn.

Sold Out

Exile target creature. If it was dealt damage this turn, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Nature's Claim

Destroy target artifact or enchantment. Its controller gains 4 life.

Tidus, Yuna's Guardian

At the beginning of combat on your turn, you may move a counter from target creature you control onto a second target creature you control.
Cheer — Whenever one or more creatures you control with counters on them deal combat damage to a player, you may draw a card and proliferate. Do this only once each turn.

"Your eyes, they burn with resolve . . . beautiful."

Syncopate

Counter target spell unless its controller pays {X}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

"I'll destroy you Exdeath... even if it means I have to take you into the afterlife myself!"

Galuf's Final Act

Until end of turn, target creature gets +1/+0 and gains "When this creature dies, put a number of +1/+1 counters equal to its power on up to one target creature."

Cid, Timeless Artificer

Artifact creatures and Heroes you control get +1/+1 for each Artificer you control and each Artificer card in your graveyard.
A deck can have any number of cards named Cid, Timeless Artificer.
Cycling {W}{U} ({W}{U}, Discard this card: Draw a card.)

"Four guys between us . . . Okay. Let's not keep Cloud waiting."

Tifa Lockhart

Trample
Landfall — Whenever a land you control enters, double Tifa Lockhart's power until end of turn.