Doppelganger

First Strike, Trample.
As Doppelganger comes into play, put two 3/3
Nightmare creature token into play under your
control.
{w/b}{w/b}{2}: Doppelganger becomes a copy of
target Human creature until end of turn.
"A demon that takes on the form of an adventurer.
You'll never know if your companion is a demon in
disguise!"