Scumlung Lillies

Scumlung Lillies are green lilly pads that sometimes grow in swamps and other quagmires. Legends say the the Scumlung Lillies originally grew on the backs of trolls, and that they only grow where trolls have stashed a corpse for later eating. Of course it is unknown whether their troll-ish origin is true, but it has been noticed that they frequently grow in brackish water where decomposition is rife, including that of corpses.
Although it is disgusting in sight, smell, and taste, the hunters of the Order Nautilus utilize Scumlung Lillies when hunting underwater creatures, especially sea-hags.

Once Fermented, dried, and added to water, Scumlung Lilly water/tea will give one the ability to breathe underwater, as well as resistance to Necrotic damage, for 1d6 hours.