Loki, Omnipotent Trickster

Deathtouch, Haste
All creatures able to block Loki, Omnipotent Trickster do so.
{1}{b}, {t}: Remove a +1/+1 counter from target creature under your control. Loki, Omnipotent Trickster gets +X/+X where X is the number of creatures in your graveyard.