oversized mtg cards Ultra PRO It is of Promo rarity The Magic Librarities

It produces a neat little push and pull where sometimes you might not want to take a cheap shot at an opposing Leader because you dont want to give your opponent extra cards

Or, pay a blue, tap, and sacrifice it when a library has 20 or fewer cards to play the removed card without paying its mana cost

You just need some type of outlet that allows you to win off of constantly flickering all of your permanents

If an effect allows you to put a card with particular characteristics onto the battlefield without instructing you to play or cast it, you consider only the characteristics of a modal double-faced card's front face to see if that card qualifies