Xerath, The Magus Ascendant

Whenever you play a damaging spell grant Xerath, The Magus Ascendant +1/+0.
If you control Azir, Emperor of the Sands or Renekton, Butcher of the Sands give
Xerath, The Magus Ascendant Hexproof.
"I am power incarnate! Who dares oppose me?"