Guardian of Priestesses

Vigilance, Lifelink, Hexproof
You and Other Creatures you control have
Hexproof.
When a creature enters the battlefield under your control put a +1/+1 counter on it.
If Pearl, Priestess of Chaos, Marina, Priestess of Order, Callie, Priestess of Spirit, or
Marie, Priestess of Patience was sent to the grave
from the battlefield transform Guardian of Priestesses.
(Treat this transformation as an Instant.)