Magic is an unfair game
Normally, adding in a Time subtheme would be clunky, as that's a mechanic which gets better with density, but because Francisco allows us to filter an absolute ton, it's often going to feel like we have more Time Counter synergy pieces than we actually do
The cards explosive synergy was strong enough to help push Kuldotha Rebirth into a ban in Pauper, and in Modern its a key piece of 8-Wack decks, which run eight Bushwhacker effects for relentless, high-speed kills
With this new ability we expect some opportunities for wild shenanigans
Tainted Aether is worth looking at, and I think its a card that actually should get more EDH play than it does, but I also know my capacity to make that happen is limited
The fail state of this card against something like Leyline of the Void keeps it from being higher on my list, but I do expect several existing decks to pick this up in small numbers