Scylla Enraged

Trample
Scylla Enraged enters the battlefield with two
times X +1/+1 counters on it.
{b}{g}{g}, Remove two +1/+1 counters from Scylla Enraged: Each opponent sacrifices the creature or planeswalker they control with the highest
converted mana cost. Create an X/X green Hydra creature token, where X is that permanent's converted mana cost.