Toxic Deluge

Lifelink Whenever another nontoken creature you control dies, exile Liliana, Heretical Healer, then return her to the battlefield transformed under her owner's control. If you do, create a 2/2 black Zombie creature token.

B, T, Sacrifice another creature: Create X 2/2 black Zombie creature tokens, where X is the sacrificed creature's power.

At the beginning of each upkeep, if you control no Snakes, create a 1/1 black Snake creature token with deathtouch.

At the beginning of your upkeep, you draw a card and you lose 1 life.

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to that card's mana value.

T: Add CC.

T: Add one mana of any color in your commander's color identity.

Deathtouch