one piece card game op10 Royal Blood Rare Violet Op10-062, Purple 6 Leader cards Cavendish - OP10-105 (Pirate Foil)

Memory Erosion is an often overlooked card, many would probably rather have Sphinxs Tutelage

Virtue of Loyalty The enchantment half of the card here is expensive and slow to build your primary gameplan around, so this cards power level is largely tied to the in-game relevance of Ardenvale Fealty

The big question is when to purchase them

It's an artifact that gives any non-artifact spell you cast Improvise, allowing you to tap artifacts to pay for its mana cost

Remember: sometimes the best removal is player removal

If its ability is activated again during that turn, its at the beginning of the end step ability will trigger twice at the End step of that turn