crystal yugioh cards Skull - Battles of Legend: Crystal Revenge 000 ATK Crystal Pair - Yugipedia

These cards are Focus: Chimera, and Resourcefulness: Phenax. Looking at the art of these the Magic: The Gathering Oracle Deck cards, we can glean a little bit about what they might mean for a seeker

Each card has several parts that tell you what it does and how you can use it (We covered this with more depth here)

It specifically requires that you target your own permanents with instants and sorceries, though the payoff is that you just get free copies of permanents at almost no cost

Heart of Te Fiti Item The Heart of Te Fiti is a decent card that could be combined with Gramma Talas Floodborn card to gain extra lore

You may exile a legendary creature card from among them