I'm thinking of shuffling a few sorcerer/wizard spells to lower level (for example, cone of cold) for my E6 games.
I noticed there's a cleric domain called Blackwater in the Stormwrack supplement that grants the cleric access to black tentacles at 3rd level. Now, I love the spell, and I wonder if it would be unbalancing to move black tentacles down a level, even if it is a potent spell. There are no sorcerers in my campaign (they are replaced by warlocks), so wizards would be the only characters that would have access to the spell.