Wow, predictable. And cliche. Good show, nightmare.
I won't bother wasting my time. I don't even have anything else to do, yet I know there are better things to do than sit here and squabble with someone that fights people over the internet for no reason.
But since I like to finish my fights...
*takes a rusty iron pipe, whacks nightmares head a few times, breaks his jaw to fit the pipe in his mouth, then pours a lethal mixture of arsenic and cyanide, with some ammonia for good measure down the pipe and into nightmare's gullet, followed by an antimatter power bomb set to detonate in 30 seconds, then quickly encases him in an unbreakable adamantium box, welding it shut through the good-smelling ways of braze welding, and follows it up by letting the power bomb explode in the box, disintegrating all form of matter in whatever state they are inside of the box, followed up by taking the box to a nearby blackhole and tossing it in, compressing and expanding the box from the size of a planet to a mere single atom with gravitational forces powerful enough to crush an entire galaxy in a milisecond before coming out the other end of the black hole as a scattered cluster of barren molecules which are promptly obliterated by a biomechanical recreation of Bahamut and his Mega Flare*
If you worm your way out of that one without being a cheapass and saying your immune to guests will only further demonstrate your absolute idiocy and being unable to accept defeat while being an asshole while your'e about it.