Grenhall, Imposing Fortress

When Grenhall, Imposing Fortress enters the battlefield, Grenhall deals X damage to target
opponent where X is the number of creatures
you control.
When Grenhall, Imposing Fortress enters the graveyard from the battlefield, create X 1/1 white Survivor creature tokens where X is the number
of creatures you control.
It has stood proud against dust storms for ages