Sounds fine on the surface, but I can think of a bunch of sacrifice-oriented decks that would just laugh at this
Wizards has and may continue to print special versions of cards not meant for regular gameplay, such as oversized or commemorative cards
and of course Jace, the Mind Sculptor were dominant in their times in Standard, and in the case of Jace, in older formats as well
Four mana, one creature, and suddenly the biggest threat in your deck is on the battlefield
This is mostly practical in that I tend to draft cube on weeknights
Like many decks on this list, Grave Danger focuses on a few key strategies and does so in a way that makes them simple to understand, even if it will take time to truly master them