Interestingly, I submitted a very similar card in green (as green was the color of Regrowth) but Mike, the lead designer of the set, preferred the effect in black
Frilled Cave Wurm by Aaron Miller had it as well this year being inspired by the Raft of the Medusa by Gricault
And that's not Gedatsu's only asset
The metagame is completely out of whack, everyone is trying to figure out what works, and mono-red takes advantage of this confusion by mercilessly cracking in for damage
Contents: Magic: The Gathering Universes Beyond: Warhammer 40,000 Commander Deck Necron Dynasties
To understand how having two underpowered effects stapled together is changing how I build Commander decks, we have to look at a game of Commander from a more meta perspective