You and that player each create an X/X green Treefolk creature token
Apocalypse Penumbra Bobcat Penumbra Kavu Penumbra Wurm Penumbra, while unnamed, was the first mechanic to use creature tokens as the core of the mechanic
Card discarding like this is a bit dangerous because you can cause your opponents to draw into better cards, but if you have additional on draw or discard triggers then it's definitely worthwhile, and of course you could cycle this or reanimate and sacrifice it repeatedly
If its a permanent card, put it into your hand
This will not only allow us access to cast cards of those colors reliably, but also to be able to pay the upkeep cost of UBR for Nicol Bolas
Today, a single sealed Alpha starter deck might go for $15,000 to $30,000 or even higher at auction, depending on its condition, the sealing, and the sellers reputation