And its instant speed, so you can wait until after blockers are declared if you wish
The Fast Catch trick can solve this
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)
Of the remaining 54 nonland cards, there are 25 total cuts that I would make to get the engine really revving, mostly considering efficiency or impact
The copy is an Illusion and isnt legendary, so it sidesteps the legend rule entirely
The first 48 hours are when supply is tightest and FOMO is highest