This separate collection of 15 cards often makes the difference in the outcomes of best-of 3 matches, and knowing how to build a sideboard and when to swap cards into your main deck is an essential way to prepare yourself for any competitive game
Remember, the person opposite you may not be dishonest
Its also an enchantment, so its one of the generally more protected permanents in EDH
This works a lot like the recent Digimon Card Games security system, in the way that it can occasionally spring interesting traps on your opponent as youre losing health, often making damage-dealing just as suspenseful for the one dealing damage as the one receiving it
Maybe it could find a role copying a single expensive spell, but I'm not sure what that would be in Legacy
Imprint an instant (not sorcery!), deal combat damage with the equipped creature, and copy the imprinted spell