Mythical Beast Master Cerberus

Partner with Mythical Beast Jackal King

Whenever a player casts a spell, you may put a spell counter on Master Cerberus.

If you control permanents with four or more spell counters, Master Cerberus has Indestructible.

Remove four spell counters from permanents you control: exile target creature an opponent controls. Master Cerberus gains power equal to that creatures power until the end of turn. This ability can only activate once each turn.