Overall, I dont think theyre good, but at least The Wind Crystal might find a good home depending on how the format shapes up
A 2/2 for three mana, Sydri has two activated abilities that can synergize with different types of artifacts
Then they special summon Eldlich with the trap, attack, and on Main Phase 2, contribute both to get Superdreadnought Rail Cannon Gustav Max
They are all activated as Quick Effects unless they have the Slow type
Time travel says, "For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter." So, you can put out cards like Judoon Enforcers, Star Whale, and Atraxi Warden out early