Freysa, Ethereal Pathlighter

Flying, vigilance
Whenever one or more creatures enter the battlefield under your control, investigate. (To investigate, create a colorless Clue artifact token with
"{2}: Sacrifice this artifact: Draw a card.")
At the beginning of your end step, if you created
one or more tokens this turn, distribute up to
that many +1/+1 counters among creatures you control.