Source: Dragon #335
On stormy nights, your aquatic fey ancestry grants you the ability to see glimpses of the future.
Prerequisite: Aquatic Fey Bloodline, ability to cast 5th-level arcane spells.
Benefit: You can cast divination once per day as a spell-like ability (caster-level equals your level in the arcane spellcasting class that granted you access to this feat). However, you can only cast this spell on stormy nights, as it is your ancestral tie and its link to water that grants you this ability. This ability does not affect your number of spells known or spells per day.