Centaur Huntmaster

Vigilance, reach
Whenever Centaur Huntmaster blocks or
becomes blocked, you may have it deal 1 damage
either to target attacking or blocking creature, or
to the player or planeswalker it is attacking.
Whenever Centaur Huntmaster deals damage to
a creature, until the end of your next turn, that
creature loses flying and cannot have or gain
flying or block creatures you control.