Well, with both you are only in risk of a removal check...
What's wrong with a bit of risk?
Well you can also run cards like dryad's revival and memory's journey which allows the labman deck to stick to UG without any splash, permitting both UG and UB selfmill decks
Dryad's Revival also lets you have a safety net for Jace, who is a superior Lab Man anyways IMO.
I mean, this is low power spotlightI think both are applicable at most RTL cube power levels.
The safety net is the "creature recursion" you mention, not any of the cards shown, except the Wand with it's second ability (which is why it's a nice card).
Winding Way in no ways offers you the chance to get LM back from the dead. Something like grapple with the past is a good example of a GY-filler that also offers recursion, but far be it from most GY fillers having that feature.
I've been playing this card in my Cube recently since it was a powerful standard card back in the day, and I think it's ok. A lot of this card's power came from having multiple copies in decks that were ramping a ton with Nykthos, Shrine to Nyx. It was possible to be making three 2/2s a turn with this card back in the day.
Has anyone ever tried this card in a cube? It creates relevant bodies (2/2s with potential upside) and the rate seems decent for lower powered cubes. And the first ability is probably a good way to make up a potential tempo loss.
An obvious comparison would be Dawn of Hope, a card I am very fond of in my cube. But Mastery here is no card draw engine. Do the better "tokens" make up for it?