Zael, Brimstone Judge

First strike, deathtouch
You can't cast spells during your turn.
At the beginning of each opponents' upkeep, that player sacrifices a nonland, nontoken permanent.
You may add X mana in any combination of {b} and/or {r}, where X is the sacrificed
permanent's converted mana cost. Until end
of turn, you don't lose this mana as steps and
phases end.