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)
No minimums
Whispers in the Well makes a lot more ink color combinations viable, and brings some truly powerful landmark cards to the forefront
With the right mana and graveyard setup, this enchantment becomes a stellar way to storm off
Read More: The joy of unoptimized decks 4 Razaketh, the Foulblooded This is the most mana-intense commanders on the list at eight mana, but Razaketh, the Foulblooded is very much worth it
The kicker (not the mechanic) is that if you Saddle Caustic Bronco your opponent is the one who loses the life instead