at the beginning of your end step, put an invitation counter on wedding announcement. if you attacked with two or more creatures this turn, draw card. otherwise, create a 1/1 white human creature token. then if wedding announcement has three or more invitation counters on it, transform it.
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wedding festivity
enchantment
creatures you control get +1/+1.
Vampires from every bloodline mingled together, all swelling with pride to be seen at the event of the century.