Tidewalker

Tidewalker

Creature - Elemental | Power/Toughness: * / * (CMC 3)
Tidewalker enters the battlefield with a time counter on it for each Island you control.
Vanishing (At the beginning of your upkeep, remove a time counter from this creature. When the last is removed, sacrifice it.)
Tidewalker's power and toughness are each equal to the number of time counters on it.