Witches Wedding Invitation

{0}{3}/{2}{1}/{1}{9},{t};
Two target creatures gain +1/+1 and Lifelink
For each additional player that joins them
on the battlefield, put an +X/+X counter on
the ceremony date. Where {x} equals the
number of guests attending the ceremony.
https://www.theknot.com/us/timothy-mcmurry-and-katrina-lewis