Silent Hallcreeper (Duskmourn: House of Horror)

Enchantment Creature Ñ Horror - This creature can't be blocked.
Whenever this creature deals combat damage to a player, choose one that hasn't been chosen Ñ
¥ Put two +1/+1 counters on this creature.
¥ Draw a card.
¥ This creature becomes a copy of another target creature you control.