Giant Hands

At the beginning of combat on your turn,
you may exile target creature card from
your graveyard.If you do,amass Giants 2 army,
then return the exiled card to the battlefield
merged on the bottom of the amassed Army.
It becomes a mutated permanent.
At the beginning of your end step,each
opponent loses X life,where X is equal to
the number of tapped creatures you control.