Spells for self-immolation!

[Xhosant]

So here I find myself making a very mobile character that accidentally gets immunity to fire and cold. Is there any spell or effect that could exploit this, following my movements with an area of damage of fire or cold, so that enemies are damaged by my presence?

TL;DR how can I set myself on fire (or coldfire?) to kill things near me?

[Geddy2112]

Pathfinder has detonate (http://paizo.com/pathfinderRPG/prd/advancedPlayersGuide/spells/detonate.html) and I am pretty sure there is a 3.5 equal.

[Janthkin]

Body of the Sun.

You can also just stand in the middle of your own Fireballs/Firebursts.

[Xhosant]

Body of the Sun.

You can also just stand in the middle of your own Fireballs/Firebursts.

Body of the sun is a little on the weak side, and on the short side :P

I am hoping something like 'chain fireball' on me, or 'rolling orb of fire, stuck on me' :P

[Jormengand]

I believe there's a spell called Balor Nimbus that does this, and there's also the controlled immolation feat.

[Xuldarinar]

Grease (targeting self) + spark?

Would that work?