If you can pay eight mana, you also force each opponent to sacrifice a permanent, and then you may transform Kefka
It creates a durable outer layer that helps preserve box condition while allowing the artwork to remain fully visible
By the time you have seven mana, the answer should be yes, and if it isnt, your mana base sucks and thats a damning indictment of your value as a human being
One quirk worth knowing at the table is no matter how you cast it, its mana value stays at five, which matters against effects that key off mana value
Sword of Feast and Famine (Equip Artifact) Another of the strongest Swords, [c]Sword of Feast and Famine[/c] gives your creature protection from black and green, in addition to the standard +2/+2