War, Keeper of Bloodshed

Haste
Whenever another creature you control dies,
it deals damage equal to its power to any target.
{1}{r}, Reveal War, Keeper of Bloodshed from
your hand: Put a blood counter on this creature. Activate this ability only when a creature would
die. If there are three or more counters on it, you
may cast this card from your hand without paying
its converted mana cost.