While Undergrowth Recon, a three-mana green enchantment, doesnt let you replay them, it does let you return them from the graveyard for free at the beginning of your upkeep
Trynn & Silvar allow you to play tribal, hatebears, Voltron, aggro, tokens, and aristocrats all in the same deck and it plays them all very well
I did manage to get one nicely onto this Cyclonic Rift, though: And here's a video so you can see how the holographic effect looks
Skullclamp will net you 2 card draws for each creature that dies with it equipped, and it only costs 1 to cast, and 1 to equip
While it isnt competitive, its a fun group hug or chaos piece that changes the whole tables strategy
The deck plays patiently, builds resources, and then snowballs with powerful artifact payoffs