Báy, Fantastic Killer

Haste, vigilance, menace
{3}: Until end of turn if {w} was spent to activate
this ability this creature gains Flying, the same is
true for {r} and Double strike, {b} and Deathtouch,
{u} and Hexproof, {g} and Trample, and {c} and
Infect.
{1}{r}{w}{b}: Destroy target attacking, blocking, or
fighting creature.