Davriel, But A Cat

whenever you sacrifice another creature, put a
soul counter on Davriel, then you may
pay {b} equal to the number of soul counters on
him. if you do, create a number of treasure
tokens equal to half the number of soul counters
on him, rounded down.
Davriel's power is equal to the number of soul counters on him.
{1}{b}: Sacrifice another creature.