Dimir Charm

When you activaate this charm, you can cast
the blink or sleep(3rd level version) spell.
Alternatively, when you take damage
you can use your reaction to turn invisible
and teleport up to 30ft to an unoccupied
space you can see. You remain invisible until
the start of your next turn or until you attack
or cast a spell.The charm vanishes after
you activate it. The sell's save DC is 15,
it's ttack bonus is +7, and the spellcasting
ability modifier for any spell is +4.