Gigapredator

Double strike, trample
Efficient Predator - This creature can't be blocked
by creatures with power more than the amount
of +1/+1 counters on it.
{x}{x}{g}Monstrosity X
"Super-predators that can grow to sizes of mountains,
they over-hunted their prey and starved their species
to near-extinction in a mere decade."
-Codex of Beasts