Animosity Incarnate

Whenever a creature you control with power 7 or more attacks alone, you may have that creature
get +X/+X until end of turn, where X is Animosity Incarnate's power.
Whenever a creature you control attacks alone, that creature gains trample until end of turn.
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)