Pillars are overrated.
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I haven't bothered to buy enough packs to upgrade all my stormshields, but once the combo is in play, this decks out mages fast. You want the unupped scorpion claws over the upped ones as they attack more. Why are the gives unupped? I... was probably going for the unupped bonus. There's a lot to be explored here, and I don't have the patience/organisation to test optimisations.
Other options to test:
Life nymph - MOAR adrenaline!
Miracle - adrenal RoLs give a LOT of light
Metamorphosis - once you have enough
, you sometimes want lots of something else
light/life mark - especially if you have upped stormshields, you might not need so much
A defensive shield - Sometimes one more turn can make a big difference