
Gogo, Master of Mimicry | Legendary Creature | Wizard | {X}{X}, {T}: Copy target activated or triggered ability you control X times. You may choose new targets for the copies. This ability can't be copied and X can't be 0. (Mana abilities can't be targeted.) | Thea Dumitriu

Y'shtola Rhul | Legendary Creature | Cat Druid | At the beginning of your end step, exile target creature you control, then return it to the battlefield under its owner's control. Then if it's the first end step of the turn, there is an additional end step after this step. | Immanuela Crovius

Absolute Virtue | Legendary Creature | Avatar Warrior | This spell can't be countered.
Flying
You have protection from each of your opponents. (You can't be dealt damage, enchanted, or targeted by anything controlled by your opponents.) | Toni Infante

Emet-Selch, Unsundered | Legendary Creature | Elder Wizard | Vigilance
Whenever Emet-Selch enters or attacks, draw a card, then discard a card.
At the beginning of your upkeep, if there are fourteen or more cards in your graveyard, you may transform Emet-Selch. | Néstor Ossandón Leal

Vivi Ornitier | Legendary Creature | Wizard | {0}: Add X mana in any combination of {U} and/or {R}, where X is Vivi Ornitier's power. Activate only during your turn and only once each turn.
Whenever you cast a noncreature spell, put a +1/+1 counter on Vivi Ornitier and it deals 1 damage to each opponent. | Toni Infante

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