Was thinking about bosses, my nearly potion-less, consumable-less winning streak... The only boss (after the tutorial boss) that comes to mind of resorting to potions is the Water Boss. Who I think heals?
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Gleamsand's basically an 15 DEF boost that's Undeflectable (I think? I need to check if my memories of it being deflected are actually Treat being deflected)
Temporary status, but it's the second fastest turn?
But only good with my block strat to keep it up? How many attacks can land within the Sand timelimit?
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In my thoughts, I found the Vigor Crystal, was that the blue one? The HP booster, whatever it's name is. Not sure how useful it is. I can't think of any strats that a boost of ~25 HP at most, is good for, do you? If someone was doing a Bumpy Road run, maybe??
But hey, maybe there will be something that makes HP boosts really useful compared to getting DEF instead...?