Pangor, Avenging Grace

Double strike
Whenever another nontoken creature you control
dies, if it dealt combat damage this turn, add {b} or {r}. Until end of turn, you don't lose this
mana as steps and phases end.
{x}{g}{w}: Put an Aura card with converted mana
cost X from your hand or graveyard onto the battlefield attached to Pangor, Avenging
Grace.