[NTJedi]

One of my favorites is a Tartarian summoned thru the gate which has 3 earth and 2 air. Give him a fire shield, copper-plate, fire brand, lucky pendant, boots of speed, air-spirit helmet, and anti-magic amulet.

Script his spells in order depending on the threat:

Air-Shield -giving 80% avoiding incoming missles
Summon Earthpower -giving reinvigorate-4
Iron Will -- giving super high magic resist
Invunerability --giving 30 protection
Mistform --making difficult to hit

This allows him to be immune to all elements and poison, with 80% for avoiding missles, with reinvigorate, with 30 protection, fire and lightning attacks, ..... the list goes on and on.