Depending on your deck, you might also want to look at Clever Concealment, Flawless Maneuver and Cosmic Intervention the latter of which is a lot of fun with fetchlands and mass land destruction, or board wipes when you run a lot of strong EtB effects
This card costs five Ink to play and has three Strength, six Willpower, and generates two Lore when questing, but its Bodyguard ability makes it a powerful addition to any deck
But all of these small details are just that, small details
I like either half of Giant OpportunityGiant Opportunity
Returning Mechanic: Schemes New Variant Format: Archenemy Commander With the release of the Duskmourn: House of Horror Commander Decks comes the return of the Archenemy format
Arna comes with some protection as well, with a ward trigger that requires your opponents to discard a card to be able to target her