Teltark the Ruthless

Whenever a creature you control that's a
barbarian, berserker, or warrior attacks,
double Teltark's power until end of turn.
{s}: Put a kind of counter at random from
among first strike, lifelink, trample,
vigilance, +1/+1, and flowstone that Teltark
doesn't already have. Activate this ability
only once each turn.