For your money, of all the level 7 cleric and druid spells, what is the very worst one? Regular or HLA.

Symbol, Fear. Why bother chasing after enemies running away if you can immobilize them with Symbol, Stun.

Well Summon Earth Elemental is glitched in some versions of the game, where it's listed internally as both a 6th and a 7th level spell, and therefore doesn't work.

Personally though I'd say probably Storm of Vengeance, as it does minimal damage and it only kills folks that are 8th level or lower, which is almost nobody by the time you have access to it. It's a little like Death Spell, except it doesn't have the USEFUL part (killing summons) and it's a bit like Fire Storm, except it does less damage (with a saving throw, too) and it doesn't last as long. It doesn't even bypass Magic Resistance like most other quest-level spells.

I am going with Natures Beauty - Waste of time in my opinion. I assume you are talking about BG2 as BG only goes to lvl 5 I think.

Hey man, Nature's Beauty causes permanent blindness with no save. That's what you're really using it for, not for the death effect.