I could also see this as a sideboard option in a similar role that Otter Ral plays in Izzet decks
The process for doing so is incredibly simple, although, as the game never really explains it, there are a ton of people missing out on this simple and easy-to-use feature
5 Erika's Invitation 203/165 Out of the seven Special Illustration Rare cards, only two of them are not Pokmon ex, including this Erika's Invitation Trainer card number 203/165
Play him with Ponyback Brigade, Take Up Arms or even the Manifest producing cards and he will just do work
Whenever one or more cards are put into exile from your hand or a spell or ability you control exiles one or more permanents from the battlefield, create a 1/1 white Spirit creature token with flying
Last but not least, we have Kruphix, God of Horizons