Saitama, just a hero for fun

Flash, haste, flying, indestructibe, deathtouch,
trample, vigilance.
Saitama's power and toughness is equal to your
opponent life total +1.
Whenever Saitama deals damage to a player, you
win the game, twice.
{r/w}: Exile Saitama, then return that card to the
battlefield under its owner's control.
'overwhelming strength is boring.'