I also thought about getting Reverse Flash to help. However, we could not be sure he wouldn't join Savitar instead and delight in Barry's suffering!I also thought about getting Jay Garrick to help but a speedster would have to take his place in the Speed Force "regret room." I'm not sure if Wally or Jesse could put a Kid Flash or Jesse Quick time remnant in Jay's place temporarily . . . If we must have another speedster how about Barry travel to the future and get Bart Allen (Impulse) to come back and join the fight?Savitar has been time travelling and upsetting the balance of time for quite a while now. Why hasn't the Black Flash been dispensed to cure this problem? Especially since a remnant is doing all this damage to the time stream. Perhaps Barry could go into the speed force and let Black Flash out on his own . . .
Isn't the Black Zombie Flash what Zoom became?
And too bad Flash cannot summon forth Mxy from SG world to put him down, and to redo Flashpoint!