sphinx mtg cards Enigma – Moon target instant or sorcery card in your graveyard gains flashback until end of turn Supertype: Legendary, Subtype: Sphinx, 15

So the key card needed to be banned as the deck became more consistent

(There is psychological value to countering an opposing spell with a Force Spike since they are so easy to play around, yet it's not worth playing around them in Commander because they aren't heavily played, which makes getting your powerful spell hit by Jwari Disruption especially devastating.) As for the rest of the bunch, Silundi Vision is listed as an often play just because you need to be a reasonably spell-heavy deck for it to work

Then that player copies each instant or sorcery card exiled with this enchantment

You could be forgiven for not being up to speed with Lorcanas lore or not having even realised that there was a story, as the details so far are relatively few and far between