Mega Mushroom

Powered Up - If this card would leave the battle-
field, shuffle it into the Power Up deck.
Enchanted creature gets +3/+3, trample, indestructible and annihilator 1. (Whenever this
creature attacks, defending player sacrifices a
permanent.)
Mega Mushroom enters the battlefield with two
time counters on it. At the beginning of your
upkeep, remove a time counter from it or shuffle it
back into the Power Up deck.