Skallywag Mech

When Skallywag Mech enters the battlefield,
place 3 time counters on it. Remove one time counter at the start of each one of your upkeep phases. When Skallywag Mech has no time counters on it, exile it and return it to the battlefield under your control transformed.

Whenever Skallywag Mech attacks, it deals
damage equal to 1/4 this creature's
power, to all creatures you don't control.