Pact of the Serpent

Sorcery

Choose a creature type. Target player draws X cards and loses X life, where X is the number of creatures they control of the chosen type.

"Our quarrels behind us. Our foes before us. Death or triumph for us all!"

2021-02-05 The value of X is based on the number of creatures the player controls of the chosen type as Pact of the Serpent resolves.
2021-02-05 You choose the target player as you cast Pact of the Serpent, but you don't choose the creature type until the spell resolves.
2021-02-05 You must choose an existing creature type, such as Squirrel or Knight. You can't choose card types (e.g., artifact) or supertypes (e.g., snow).

Card is in preconstructed decks:

mtg.wtf