Mittens:
i don't even understand the purpose of this exchange. are we building a homebrew spell for wastelands? 6th level? That's getting a tad ahead of ourselves. or is this just a hypothetical "what if" idea for a game that will never happen?
The initial cause basically, was that the warlock spell list already being rather bare bones for assorted meta logic reasons, just goes into full bore "Meh, who cares?" territory past level 5.
With such wonders as "There are only four spells on their 7th level list". and "Half the spells at 6th level are just supplement spells, which in turn are just "We split an elemental buff spell, into four different spells for specific elements lol"
That won't be much of a problem for you personally in SiW if you follow the suggested path of the Munchkin "Treat Warlock as a two level cantrip and fuel source for sorcerer" though. (Though it will eventually turn up for my straight warlock).
Seth also wanted a custom spell rather than just borrowing from the spell table to have something "More chtullu themed"... But you can guess how trying to meet "Great Old One" standards went from a balance perspective (Just ask Tim about the very first shot at the custom spell).
Combined with lots of hindsight about underlying mechanics, not helped by official spells being of questionable balance tuning often anyways.
But said custom spell's most recent revision is at a point of good cool thematic spell that's also reasonable.
Take Wall Of Thorns. Add a "I don't want to go into the spooky murder wall, duh" fear effect on the wall. Lower but meta buff the damage from 7d8 pierce, to 6d6 half pierce half psychic. So it's lowered reasonably cap/averages wise for the control effect, but thematically better off against 'LOL I tank even magical weapon damage!' stuff.
So now the biggest question is as usual, "Was it worth opening the Pandora's box of 'Ask Will for balancing advice'?"
This message was last edited by the GM at 20:17, Thu 05 Jan 2017.