Carcharoth, the Red Maw

Carcharoth, the Red Maw cant be countered.
Devastator 4 (Whenever this creature would deal
combat damage to a player, that player may sacrifice
four lands. If they do, prevent all combat damage
dealt by this creature this turn.)
Whenever Carcharoth becomes blocked, or deals combat damage to a player, put a +1/+1 counter
on it.