collector booster box Amazon.com: Magic: The Gathering Modern Horizons 3 The cards are made from high Marvel Super Heroes - Collector

I think the main use is to give protection from a removal spell for 2 mana, which I believe is a filler combat trick or mostly a sideboard card

While they're varied none of them have particularly game-breaking effects

GR Gold Rare Grapha, Dragon Lord of Dark World X DARK Level 8 [ FiendEffect ] ATK 2700 DEF 1800 You can Special Summon this card (from your GY) by returning 1 "Dark World" monster you control to the hand, except "Grapha, Dragon Lord of Dark World"

Now if they only show you a land you are unable to drop it since it uses the word, "cast" rather than play

[15] This begins to fade when Hart Tenjo was saved from Vetrix and Kite was in despair, she tells him that even if he was at Hart's side, nothing would change and urged him to calm down