Charging Barroth

Trample, vigilance
Turf War {1}{w}{r}{g} ( You may cast this creature
for its Turf War cost as though it had flash only if
an opponent attacks you with a creature that shares
a color with this one.)
When Charging Barroth enters the battlefield,
if you cast it for its Turf War cost, it deals 5
damage to you and 5 damage to target attacking creature.