Vamana the Humbler

{4}{w}{w}{w}: Put five +1/+1 counters on
Vamana the Humbler. It becomes an Avatar
and gains indestructible. Then destroy all
non-Avatar creatures. Activate this ability
only if Vamana is a Human.
Three feet of land was all he asked for. What
they underestimated was the size of his foot.