Devastator Hydra

Ruination 2 {5}{g}{g}{g} (You may cast this creature for its Ruination cost. If you do, each opponent sacrifices 2 non-enchantment permanents, and you put a +1/+1 counter on this creature for each permanent sacrificed this way.)
When Devastator Hydra enters the battlefield, if you played it for its Ruination cost, you may sacrifice 2 other creatures or lands. If you do, double the number of +1/+1 counters on Devastator Hydra.