Loki vs. Lizard
Loki gets his staff from The Avengers plus his usual array of knives. Lizard (ASM) is immune to mind control.
Neither know anything about each other. Fight is in the middle of New York, both going for the kill, both not caring about collateral damage. Why are they fighting? Because Loki asked Lizard to kneel... which obviously didn't work out well.
Round 1: Loki gets full use of his powers and his staff (minus mind control)
Round 2. Loki still has his weapons but is limited to melee (no illusions or energy blasts from his staff - throwing knives still allowed)
Round 3: Loki fights Lizard in pure h2h