Canteen Cactus

Mundane; material

Region: Blasted Badlands, Fiery Hellscape, Parched Sands (hot deserts)

The canteen cactus is closely related to its cousin, the dartspine cactus  and shares an almost identical appearance. Low-growing and circular, it has long spines that help protect its flesh. However, a DC 17 Nature or Survival check reveals the slight differences in appearance, letting adventurers know that this cactus is safe despite its fearsome appearance.
A canteen cactus can be tapped for water with a DC 15 Survival check, providing enough water for 4 Supply. 
Adventurers who drink this water gain advantage on their next saving throw against the effects of extreme heat.