Dimir Charm

When you activate 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
30 feet 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.