When the Ring's temptation takes effect and Aragorn, Company Leader is not chosen as the Ring-bearer, then the player may give Aragorn, Company Leader a counter for one of four evergreen effects to make him more powerful
There's also Cabal Coffers for a second chance at a lot of mana and Urborg, Tomb of Yawgmoth to make sure any lands you steal from your opponents can produce black mana for you
Even killing it wont do your opponents much good since it can easily flip back over into a creature when you attack with at least three creatures
Thats a heck of a long lead time, though it makes sense for a set as widely-hyped as this one
Rise of the Eldrazi (2010) The Eldrazis were ancient creatures that predated the colors of magic, so they were represented by colorless cards, with transparent frames
Last but not least, Crossway TroublemakersCrossway Troublemakers combines the best of both worlds