Mamu

Trample
For each card in all graveyards, Mamu gets
+1/+1.
The carrion feeder, the rot gorger. Mamu feeds on the
ruins and corpses left behind by war, growing bloated
and immense on a diet of decay. The titan never feeds
on the living, but its drums of war stir the hearts of
men, calling them to their deaths, none can escape the
call of the drums.