Karn, Scion of Urza (Rainbow Foil) [Secret Lair Drop Series] Gamegenic and an Xyz Monster

and an Xyz Monster

you may search your library for a Praetor card

"Gather your strength

thanks in part to the manifestation of his mutant power to control magnetic fields

where X is 4 minus the number of cards in their hand

Karn, Scion of Urza (Rainbow Foil) [Secret Lair Drop Series] Gamegenic and an Xyz MonsterSet: Secret Lair Drop Series Type: Legendary Planeswalker Karn Rarity: Mythic Cost: {4} +1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it. 1: Put a card you own with a silver counter on it from exile into your hand. 2: Create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control."