Bubba-Lubba, Run Aground (PEN157) - Compendium of Rathe

This enters the arena with a +1POWER counter.
Action [1 - Resource], TAP: Attack
Action Remove a +1POWER counter from an ally you control: Destroy an aura token. Go again
Watery Grave (When this is put into your graveyard from the arena, turn it face-down.)