Prodigious Caster

Through study, luck, pact, divine providence, or natural ability you have been able to leverage your knowledge of arcana to fill a gap in your powers. 

• +1 to your Intelligence, Charisma, or Wisdom score, to a maximum of 20.

• Pick a character class (Bard,  Druid, Cleric, Sorcerer, Warlock, or Wizard). Choose one Spell from that class' list that you have Spell Slots to cast. You gain the ability to cast this spell using your spell slots, however it will always be cast using the spellcasting modifier of the class it came from. A different spell can be chosen to replace this one from any of the listed classes whenever you gain a level in a spellcasting class. You may also select a different spell through a procedure that takes a number of work days equal to 10 minus your Arcana bonus (Minimum of 1) and at a cost of 25 gold pieces per level of the replacement spell chosen in arcane components.