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There is a Legacy version here.

PFS StandardCantrip Expansion Feat 2

Bard Cleric Magus Oracle Psychic Sorcerer Witch Wizard 
Source Player Core pg. 101 2.0, Player Core 2 pg. 138 1.1


Study broadens your range of simple spells.

Prepared Caster (Cleric, Wizard, etc.): You can prepare two additional cantrips each day.
Spontaneous Caster (Bard, Sorcerer, etc.): Add two additional cantrips from your spell list to your repertoire.