Nezuko, The Relentless

Haste, first strike
Nezuko, The Relentless gains +2/+0 for each
blood counter on the battlefield.
Blood Demon Art: you may remove {x} amount of
blood counters from the battlefield, if you do,
Nezuko, The Relentless deals {x} damage to all
creatures that had blood counters. Activate only
as a sorcery.