For every instant or sorcery cast with this thing, you get to bank it
While it's a fine card and scales throughout the game, there are a ton of graveyard-centric / reanimation decks in Commander, and it seems unlikely that Gyrus, Waker of Corpses will beat out most of the pre-existing options outside of something like Jund Hydra tribal (and then, it's not even that good with many Hydras since they are X-creatures, which won't work with the reanimation ability)
Just keep in mind that, like the green-white deck, this deck is aimed at Eternal formats, so youll not be able to play these cards in Standard
The stakes of each game are sometimes high, as characters compete to protect their friends, help their loved ones, and in some instances, determine the fate of the world