Feat: Summon Water Elemental
You can summon an elemental ally. Once per day, you can cast Summon Elemental as a 5th-rank primal innate spell, but the elemental summoned must be a water elemental.
Pathfinder 2e Database
You can summon an elemental ally. Once per day, you can cast Summon Elemental as a 5th-rank primal innate spell, but the elemental summoned must be a water elemental.