The X420X Helmsmasher

When The X420X Helmsmasher enters the battlefield, discard each creature in your hand, and discard one of those cards into exile Put a +1/+0 counter on it equal to the total power of each discarded creature, and put a +0/+1 counter on it equal to the total toughness of each discarded creature. The X420X Helmsmasher has all the abilities of the card discarded into exile.
Flying