I found that using Jet Synchron's effect to revive it and linking it for Promethean instead of Ohime can help keep the Ohime on board. Also after that you can link the Formula Synchron with Promethean for Spright Elf instead of Amblowhale so you can revive the formula. This route has its pros but it also may not be optimal since it clutters the board making you unable to use Flamberge's graveyard effect when you synchro into Baronne. Just putting this out there.
