Rakdos Signet
While all colors have access to some form of removal spells, blue mages make do with bounce spells that provide only a temporary reprieve from the horrors of your opponents playing Magic, but that can be all the time the right deck needs
With Flying, First Strike, Vigilance and Trample, as well as 6/6 Power and Toughness, Akroma herself is certainly quite tough to deal with on her own
That -6 ability will be partially good as green tends to suffer a bit from reliable sources to draw cards
If your deck has other 'prevent damage' cards, this creature can get really big every time someone attacks you, or act as a deterrent for you to be attacked
A major part of Lockes story in Final Fantasy 6 is his trying to revive a former romantic partner, Rachel