Divine Spark(Fallen)

Your divine spark grows more powerful. You learn the detect evil and good spell and can cast it at will, without expending a spell slot. You also learn blindness/deafness and vampiric touch, each of which you can cast once without expending a spell slot. You regain the ability to cast those two spells in this way when you finish a long rest. Charisma is your spellcasting ability for all three spells.