It can be played in just about any deck that needs a long-term win condition, and it supplies just that
I get that its difficult to design seven-drops people will actually play when Titans were still legal, but this is ridiculous
That said, these decks are also very satisfying to play for veteran Magic players who understand how to effectively pull off their combos and have the means to assemble them
It only costs four mana, so it can be played early, which is great as you want to play Door of Destinies as quickly as possible so it can start loading up counters
His 2009 Worlds deck, which was Flygon, used many different starters and he ran 1 copy of each of them
Even more worrying than this, however, is her reanimation ability, which can bring back all manner of hulking horrors given a few turns to work