tier 1 lgs has the same spellpower type and offers +150, tier 3 also offers a net of +7 exceptional fire spell power (I don't believe expectional usp stacks with exceptional fire spell power but i could be wrong, and if it is, its likely a bug). Still when your spellpower is in the 1600-2000 range in total from everything, the extra lgs crit multi more than makes up for a loss of 52 (really net loss of 43 or 13 potentially if its bugged and stacking at the moment) spell power.
Interesting, so the game finally has some ways for spell critical multipliers.
Going to dust off my Epic Red Dragon helmet and suit.
Universal and fire should stack and that wouldn't be bugged, potency and fire should not. Potency gives spellpower to each spellpower, like on morninglord's, universal is a separate spellpower that affects all your spellpowers. https://ddowiki.com/page/Universal_Spell_Power
Wow I didn't know lgs had that, as far as I knew burnscar and thrummingspark were the only enhancement spellpower items in the game lol... I really need to just look carefully at everything you can do with lgs sometime, and I should probably be farming ings and runes too lol.
Formerly known as Absolute-Omniscience, co-creator of the old DPS calc.