Defiler of Instinct
From Dominaria United set
Defiler of Instinct
Creature — Phyrexian Kavu
4/4
First strike
As an additional cost to cast red permanent spells, you may pay 2 life. Those spells cost less to cast if you paid life this way. This effect reduces only the amount of red mana you pay.
Whenever you cast a red permanent spell, this creature deals 1 damage to any target.