Quote Originally Posted by tiercel View Post
If the summons somehow matter at all, blasphemy will do a pretty good job of sweeping the board of nonevil creatures (including banishing extraplanar outright, never mind the whole dazed/weakened/paralyzed/killed thing)
Believe it or not, summon monster 3,, 4 and 5 could very much cause a problem for a pit fiend if they are optimized for it. Lantern archons in enough numbers can take down anything in the game.