Magmablood Archaic
Creature — Avatar, {2/R}{2/R}{2/R}
Oracle Text
Reach, trample
Converge — This creature enters with a +1/+1 counter on it for each color of mana spent to cast it.
Whenever you cast an instant or sorcery spell, creatures you control get +1/+0 until end of turn for each color of mana spent to cast that spell.