In a Two-Headed Giant game, when a creature you control dies, Grave Pact's triggered ability will cause each other player, including your teammate, to sacrifice a creature
That means you must protect it for at least four turns to maximize its poison potential
They might glue it on top of a regular card, but its not going to fool any skilled authenticator, because the output of an office printer looks nothing like the output of an offset printing press
Derevi was pretty quickly adopted for their ability to circumvent commander tax, while also playing towards a relatively fair control strategy
Or could it be that your style is to take control of the game, cutting off your opponents resources with your well-thought-out strategies
Its useful in all sorts of locales besides Waverly Place, and the dream is to myriad out Cruel Ultimatum on an end step or in the middle of combat