
Zidane, Tantalus Thief | Legendary Creature | Human Mutant Scout | When Zidane enters, gain control of target creature an opponent controls until end of turn. Untap it. It gains lifelink and haste until end of turn.
Whenever an opponent gains control of a permanent from you, create a Treasure token. | Eiji Kaneda

Rinoa Heartilly | Legendary Creature | Human Rebel Warlock | When Rinoa Heartilly enters, create Angelo, a legendary 1/1 green and white Dog creature token.
Angelo Cannon — Whenever Rinoa Heartilly attacks, another target creature you control gets +1/+1 until end of turn for each creature you control. | Francesca Resta

Yuna, Hope of Spira | Legendary Creature | Human Cleric | During your turn, Yuna and enchantment creatures you control have trample, lifelink, and ward {2}.
At the beginning of your end step, return up to one target enchantment card from your graveyard to the battlefield with a finality counter on it. (If a permanent with a finality counter on it would be put into a graveyard from the battlefield, exile it instead.) | NINNIN

Ultimecia, Time Sorceress | Legendary Creature | Human Warlock | Whenever Ultimecia enters or attacks, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
At the beginning of your end step, you may pay {4}{U}{U}{B}{B} and exile eight cards from your graveyard. If you do, transform Ultimecia. | Mikio Masuda

Tellah, Great Sage | Legendary Creature | Human Wizard | Whenever you cast a noncreature spell, create a 1/1 colorless Hero creature token. If four or more mana was spent to cast that spell, draw two cards. If eight or more mana was spent to cast that spell, sacrifice Tellah and it deals that much damage to each opponent. | Yumi Yaoshida

Cloud of Darkness | Legendary Creature | Avatar | Flying
Particle Beam — When Cloud of Darkness enters, target creature an opponent controls gets -X/-X until end of turn, where X is the number of permanent cards in your graveyard. | Fariba Khamseh

Kefka, Court Mage | Legendary Creature | Human Wizard | Whenever Kefka enters or attacks, each player discards a card. Then you draw a card for each card type among cards discarded this way.
{8}: Each opponent sacrifices a permanent of their choice. Transform Kefka. Activate only as a sorcery. | Xui Ton