Amazingly, the monstrosity breaks free (23 vs. 22 grapple), then starts floating up. It repulses the carpet's attempt at grappling (rolled 16), dealing 3 points of damage. The carpet has 54 HP remaining. The monstrosity is at 55N15E20Z.
Round 402
The carpet starts flapping and flies up to 60N20E5Z.
After further review, I realize that the carpet is way too slow to catch up to the monstrosity if it just goes up 20 feet every round.
A draw is declared after round 406.
Round 407
A big lizard enters the arena for the Neutral side. Gansk will fill in the details.
To give time to formulate tactics, I will let you know what comes in for Neutral Evil after the lizard comes in. It is an ogre zombie (Monster Manual). At least this one has brains, unlike Skeletor.