Nice catch, I didnt think pokemon would put something so morbid into a card, especially in modern
To use another example that Ive already touched on in this article, look at the amazing interaction between Teysa Karlov (the most popular Commander in the game right now) and Hallowed Spiritkeeper
I did toss in classics Indomitable Ancients and Steel Wall
From Draft to Commander, no matter where a player may look, Foundations cards are bound to crop up
"Obelisk" would have been able to destroy "Slifer" with its effect during Yami Yugi and Seto Kaiba's Battle City Duel if "Slifer"'s ATK hadn't been over 4000 at that time
Sadly she does nothing for Cloak and Disguise, since those creatures have ward 2, which counts as an ability, but there's enough balance in the deck between the new and old abilities that I feel she's still worth an inclusion