Kevrir the Slayer

Haste
When Kevrir the Slayer enters the battlefield, it fights target creature you don't control.
Whenever a non-token creature you don't control dies, put a +1/+1 counter on Kevrir the Slayer.
{s}{r}: Kevrir the Slayer gains First Strike until end of turn.
{s}{g}: Kevrir the Slayer gains Trample until end of turn.
{s}{b}: Kevrir the Slayer gains Deathtouch until end of turn.