Ashcoat of the Shadow Swarm [Jumpstart 2022] Badger deathtouch Whenever Flamewar deals combat

deathtouch Whenever Flamewar deals combat damage to a player

Shatterskull Pass is a pretty distant second

Set: Sun & Moon: Unified Minds Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

The Cabal required a suitably immense space to house the lucrative fruits of their religious zeal

Ashcoat of the Shadow Swarm [Jumpstart 2022] Badger deathtouch Whenever Flamewar deals combatSet: Jumpstart 2022 Type: Legendary Creature Rat Warlock Rarity: Mythic Cost: {3}{B} Whenever Ashcoat of the Shadow Swarm attacks or blocks, other Rats you control get +X +X until end of turn, where X is the number of Rats you control. At the beginning of your end step, you may mill four cards. If you do, return up to two Rat creature cards from your graveyard to your hand. (To mill a card, put the top card of your library into your graveyard.)