Manahive

“Wedding Crasher” isn’t a known MTG card as of my knowledge cutoff. If you meant “Wedding Crasher” the creature from Unfinity, similar cards (in black/white) with party or celebration flavor are:

• “Celebrant of Bounty” (green/blue, but deals with celebration triggers)
• “Revel of the Fallen God” (red; celebration/party flavor)
• “Corpse Knight” (white/black; triggers on creatures entering)

If you meant a different or specific card, please clarify!