Silent Hallcreeper

Silent Hallcreeper can't be blocked.

Whenever Silent Hallcreeper deals combat damage
to a player, choose one that hasn't been chosen—
• Put two +1/+1 counters on Silent Hallcreeper.
• Draw a card.
• Silent Hallcreeper becomes a copy of another target creature you control.

"Your thoughts are not your own. They never were."