Dirty Deeds Done Dirt Cheap

Stand (When this card enters the battlefield, target creature becomes this card's "Stand User" if it enters the graveyard or leaves play, exile this card.)
If this cards "Stand User" is a Funny Valentine creature, and it enters the graveyard, another Funny Valentine creature may become Dirty Deeds Done Cheap's "Stand User".
{u}{u}{u}{u}: Choose 2 creatures that share a creature type, then exile them both.