Get the citys blessing online as fast as possible, because that extra turn ability is incredibly well costed for something you can find with Imperial Recruiter
I was able to dump a little more raw power into these effects without too much concern that they would upset anything

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It's great, but you need to run it in the right deck, not every deck can get cards into the graveyard and some want to save them for reanimation like Living Death or recursion like Eternal Witness
Flare of Fortitude You have to put a high value on instants that can be cast for free
Even go-wide token decks can run selective board wipes like Hour of Reckoning