The Four Horseman

Indestructible, Deathtouch, Menace
This creature can attack or block only if your
devotion to black, red and green are 2 in each
color.
When it come into the battlefield; For each {b} used to cast this spell, target opponent lose 2
life. For each {r} used to cast this spell, destroy
target artifact. For each {g} used to cast this spell, destroy target creature.
Power and toughness are X+1.