Primeval Behemoth

Trample
{4}{g}{g}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it
becomes monstrous.)
When the earth beneath rumbles it could be an earthquake or on of the mighty beasts wandering on it.
If you notice the landscape around you move you are probably on top of one. - Humboldt's wild volumes