It can work for EDH as well, but Impervious Greatwurm is also a lot of fun as a lottery ticket in decks built around commanders like Volo, Guide to Monsters, Hans Eriksson, and Imoti, Celebrant of Bounty
Throw in some Mox Amber and other payoffs like Urza's Ruinous Blast and you've got the core of potentially a whole new archetype in Modern
Abstergo Entertainment is a below rate version of all of those things, so of course its probably a new EDH staple
On the other hand, Breaking pairs terribly with smite and glorious gale
The Magic: The Gathering Stranger Things Secret Lair will include eight mechanically unique cards and a themed Clue token, and is set to release with six more Secret Lairs this month
There is a common misconception that an abundance of mana fixing causes a cube to devolve into five-color good stuff decks, which many designers abhor