Brine Larva Card card_sea_grotto_2

What it is for

Card: fits into Garment gear that has a free slot.

Damage taken from Water element −27%.

Weighs 2 of your carry capacity — and weight is what stops drops once the bag fills up.

The best source is Brine Larva, at 0.050% per kill. You can farm it at Sea Grotto.