yugioh booster box 25th anniversary Dark Crisis Pack [YuGiOh!] retrieving%20Dark%20Magician%20of%20Chaos%20joined%20them%20thanks%20to%20the%20incredibly%20powerful%20Dimension%20Fusion%20Spell%20Card Yu-Gi-Oh! TCG 25th Anniversary Rarity

The Peregrine Dynamo is a little more niche, and its limitation on not being able to copy a commanders ability keeps it from being too busted

Showcasing both a monumental achievement and illustrating itself as an amazing collectible, the Masters Key is likely the key to greatness for many serious collectors

You can theoretically flicker most monarch permanents or give them flash, but only Denethor lets you do it with no other effects

Electric Memory

If heads, your opponent's Active Pokemon is now Paralyzed and discard 1 Energy attached to that Pokemon

However, with Lusamine in tow, getting the Energy count isnt too difficult