Slumbering Guardian

Slumbering Guardian enters the battlefield with
3 sleep counters on it. Slumbering Guardian
cannot attack, block, or activate abilities with
sleep counters on it. At the start of your upkeep
step, remove a sleep counter from it. When
Slumbering Guardian has no sleep counters on it,
it gets +3/+3 and gains vigilance.
{w}{r}{r/w}: Slumbering Guardian gains lifelink and
double strike until end of turn.