Oh interesting. Forces you to use your stuff up in first main phase (or sacrifice your draw somehow)

Wiping out all weenies is probably fine for a 7 cost flyer. Very strong though - a 7/6 flyer for 7 that's also empowering your whole horde as a double oriflamme? Ouchie.

­Elesh Norn, Grand Cenobite did go there first, but she is mythic, and even very strong by mythic standards.

Let's not forget, though, that hellbent is a very significant drawback.

It's SORT of a drawback, but it's also somewhere most decks are bound to be, eventually.

By the time you get to 7 mana, it isn't much of a drawback. It's more... it doesn't work with certain archtypes. You can't pack this spell with counterspells and expect it to do well. But in your standard mid-range black deck with some creatures and some removal? Hellbent is unlikely to hurt you much. Even more so if that deck is focused on reanimation.

It's enough of a drawback that I'm not interested in bumping this up to mythic. Being able to reanimate Elesh Norn and then have answers in hand (more reanimation, protection against removal, etc) is a substantial advantage over... well... not being able to do that.

I might tone it down to +1/+1 and -1/-1 but this is something I'd rather do after testing (y'know, the testing we can never quite get around to).