Ugin, the Spirit Dragon

Ugin, the Spirit Dragon can't be countered.
Flying
At the beginning of your end step gain 1 life for each opponent, draw a card for each opponent, each opponent discards a card, Ugin the Spirit Dragon deals 1 damage to each opponent, and for each opponent put a +1/+1 counter on Ugin, the Spirit Dragon.
Ugin, the Spirit Dragon is all colors.