Akuma, Soul Stealer

When Akuma, Soul Stealer deals enough combat damage to kill a creature, put a soul counter on it.
{p/r}, Remove a soul counter from Akuma, Soul
Stealer: Deal 1 damage to target player.
{2}{b}{r}, Remove three soul counters from Akuma,
Soul Stealer: Exile target creature, its controller
loses life equal to its mana cost and mills that
many cards.