This guys combat prowess isn't whats bothering me. I've made him run twice now. Its the fact he's abusing the hell out of mage hand, magic missile, and prestidigitation. He thinks there's a trap? Magic Missile.
Are you talking about a trap, or an ambush? Magic missile only targets creatures, not traps, and anyway, traps shouldn't be used by themselves. While he's MM'ing the traps for pathetic damage, some big brute is making him eat his own teeth.
He thinks something is dangerous to touch, mage hand.
Not a big deal. That's why the ten foot pole was invented.
If he can't use magic, he shoves another party member into it (and they're okay with this which is even more bothersome.) Outside of combat his Diplomacy, Bluff, and Intimidation bypass just about everything short of an absolute "not happening." He's actually looked at me and said that he will take over the world before the campaign is over.
Use hard DCs and multiple skill checks for a skill challenge. An example of what
not to do: in one campaign, we were hoping to defeat a diplomat in a trade negotiation. We racked up a huge bonus to the next Diplomacy check, and unsurprisingly made it. Had the contest involved a skill challenge, we would have had to make multiple skill checks, and only gotten the bonus on one of htem.
In addition, Diplomacy
doesn't make friends. It makes deals.
Big monsters? He runs and trips his allies.
And they let him? Problem isn't the rules.
Traps? Blasts them or shoves someone else into them.
That's why you use traps as part of an encounter, and not a whole encounter. He shoves someone into a trap? Well, the enemy controller uses forced movement to throw
him into the trap too!
Anti-magic? he refuses to go. The rest of the party is so used to this behavior they just accept it. I'm tired of it.
Again, the problem isn't the rules. You need to talk to this person, and if that doesn't work, boot him.