Zygarde, Guardian of Nature

Trample, Reach
Aura Breaker-Zygarde, Guardian of Nature cannot
be targeted by activated or triggered effects of your opponents creatures.
Whenever Zygarde deals combat damage to a player, you
may destroy target creature that player controls who's
mana value is less than the amount of lands you control.
At the end of your turn, if your life total is equal to
or less than half of your starting life total, exile
Zygarde and return it to your battlefield transformed.