Whenever Witchfinder Artur enters the battlefield or attacks, each opponent mills two cards and loses 2 life.
Whenever you cast an instant or sorcery spell, you may exile target instant or sorcery card with mana value less than that spell's mana value from an opponent's graveyard. If you do, cast a copy of the exiled card without paying its mana cost.

[+2]: Mill three cards. You gain 3 life.
[+1]: Return target land card from your graveyard to the battlefield. It becomes a 2/2 black Zombie creature in addition to its other types.
[–X]: Target opponent sacrifices a nonland permanent with mana value X or greater.
[–12]: You get an emblem with “Whenever a player sacrifices a permanent, you may draw a card.” Then each opponent sacrifices five permanents.

At the beginning of combat on your turn, you may integrate another creature you control. If you don't, tap Xavvac, Corrupter Core.
Permanents you control with cards integrated onto them have lifelink and deathtouch.

Trample
Whenever you amp it up, double Xeon, BPM Savant's power until end of turn.

At the beginning of each opponent's upkeep, untap up to one permanent you control. You may cast spells as though they had flash until end of turn.
[+2]: Surveil 1, then draw a card.
[–3]: Choose a nonland, non-Xirix card name. Exile all permanents with that name.
[–9]: Shuffle any number of cards from your graveyard into your library. Xirix deals that much damage to any non-Xirix target, and you gain that much life.

Xiv, Replisparked has all abilities of creature and planeswalker cards integrated onto them.
[+2]: Target player discards a card. Integrate up to two cards from graveyards.
[+1]: Xiv becomes a 5/5 artifact creature with vigilance and indestructible until end of turn.
[–4]: Integrate target permanent.

As long as it's your turn, Yaeji has first strike.
Whenever you amp it up, exile up to one target permanent card with mana value 3 or less from your graveyard, then create a token that's a copy of it.

{T}: Add {C}{C}.
Whenever you cast a Kraken, Leviathan, Octopus, or Serpent spell, draw a card.

Flying, ward {1}
Zhovala, Silver Monarch gets +1/+1 for each other Advisor you control and each Advisor card you own in exile.
Whenever another Advisor you control dies, exile it unless an opponent pays {2}. You may cast that card as long as it remains exiled.

Trample
Rebels you control have trample.
{X}{G}: Another target creature you control dares twice X. Activate only as a sorcery.

Ward—Pay 2 life.
Whenever Zygos attacks, bless target legendary creature you control.