Charm of Myths

The passive healing is small and it is not what earns the slot. The real effect is the shorter wait between recovery potions, which over a long fight is worth far more health than any trickle. Shave a quarter off every cooldown across a Moon Lord attempt and you get an extra potion or two out of the same fight.

Not only Healing Potions. A Mushroom, a Restoration Potion and a Strange Brew all come back sooner by the same proportion. Anything that puts you on Potion Sickness gets the same discount, whatever length that sickness would normally have been.

It folds a Band of Regeneration and a Philosopher's Stone into a single slot, and the cooldown cut is the same effect the stone provides rather than a second copy of it. Wearing both together buys you nothing, so retire the stone the moment you craft this.

It used to be possible to drink, immediately unequip, and keep the shortened cooldown for free. The remaining wait is now recalculated whenever the accessory moves. Take it off partway through and whatever time is left stretches back out in proportion, put it on partway through and only the remainder shrinks. Keep it equipped for the whole fight or leave it in a chest.

The value scales with how much your potions heal and how often you actually drink. On a squishy build that burns a potion the moment it comes back up, this is close to a free extra chunk of regeneration every second. On a fight you expect to take two hits in, a defensive or mobility accessory does more.