Priest of the Waste

(Sandstorm, page 51, DnD 3.5)

[General]

You can swap out prepared spells for others that aid in exploring and surviving in wastelands.

Prerequisite

Access to the Fire, Summer, Sun, Travel, or Water domain.

Benefit

You can use a spell slot currently occupied by a prepared spell that is not a domain spell to cast a spell of equal or lower level that appears on the following list: "
cloak of shade":spells/sandstorm--85/cloak-of-shade--3120/, "
control weather":spells/players-handbook-v35--6/control-weather--2797/, "
create food and water":spells/players-handbook-v35--6/create-food-and-water--2375/, "
create water":spells/players-handbook-v35--6/create-water--2376/, "
endure elements":spells/players-handbook-v35--6/endure-elements--2317/, "
heroes' feast":spells/players-handbook-v35--6/heroes-feast--2400/, "
hydrate":spells/sandstorm--85/hydrate--3134/, "
protection from dessication":spells/sandstorm--85/protection-from-dessication--3125/, "
protection from energy":spells/players-handbook-v35--6/protection-from-energy--2347/, and "
resist energy":spells/players-handbook-v35--6/resist-energy--2357/.