Unreal Prowler

You can't cast Unreal Prowler unless you have
cast 5 or more spells this turn.
Trample, First Strike.
Whenever Unreal Prowler attacks, you may pay {p/c}{p/c}, if you do create a token copy of Unreal
Prowler and put it on the battlefield tapped and attacking, exile it at the end of combat.
The nonexistent cannot be killed