Devoted Fiendcaller

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
At the beginning of your end step, if you have the city's blessing, you may pay X life. If you do, create a X/X black Nightmare Horror creature token.

"It's no secret that life is a currency. So it's better for you to make the most of it for a 'beneficial' cause."