For when your buddy is building "Nicol Bolas the EDH deck", owns a Damnation, but for some crazy reason doesn't want to spend $220 specifically just for the Invocations printing. XD :
Slave of Bolas - Duel Decks Ajani vs Nicol Bolas - Battle Wizards Online
Nicol Bolas Planeswalker Deck from Hour of Devastation | Whitespider1066