They might use combos like Reiterate/Reset/Lightning Bolt, Dualcaster Mage/Rite of Replication, or Future Sight/Senseis Divining Top/Helm of Awakening
Being able to recur spells is a good way to come back from removal
When I mentioned to Charlotte Sable at Commander's Herald that I was building Minn, she told me about a fantastic infinite card draw combo using Toothy, Imaginary Friend, Minn, a sacrifice outlet like Ashnod's Altar and Fool's Demise
One Piece OP08: Two Legends Japanese Booster Pack
Classic lines like Dark Ritual into Entomb into Reanimate bring back Griselbrand on turn one, often backed by Force of Will to protect it from Swords to Plowshares or graveyard hate
Thanks to how much card draw there is in both Blue and Black, this is a fairly viable win condition