use improved haste with melf minute meteors and you attack 10 times per round. nothing can withstand several rounds of that.
mislead with its "blink" effect between true invisibility and improved invisibility means with improved haste, an assassin can backstab ten times a round. as long as the "double" is outside the view of any enemies, you're also immune to true sight.
mirror image is the best protection from area effect spells like abi dahzim or death cloud.
use resilient orb with free action spell to allow warriors to attack enemies with almost complete immunity to magic and weapons.
