Frankling

{t}{u}{w}: Take control of X cards target opponent controls, where X is the total number of cards
you have in your hand. When one of
them dies, turn them all into 0/20 creatures with
reach. When they die, exile the top X cards of
everyone's library, where X is however many
turns they all stayed alive. Transform Frankling.
"Release the winds of suffering and watch
everyone try to stand up."-Franklin