Bolas' combo synergy and restrictive mana cost means he's well-suited to a multicolor PW deck where he has access to any number of juicy loyalty abilities, and to enablers like Oath of TeferiOath of Teferi, Ichormoon GauntletIchormoon Gauntlet, The Chain VeilThe Chain Veil, and more
But at 4 mana and tapping, I would only be turning to this as a last resort after exhausting all the other discard effects
Pawprints are a new symbol that are exclusive to these cards, and aren't a resource like mana or energy
In Humans, a three-mana 1/1 is just not good enough for an aggressively slanted disruptive deck
It takes a full 2nd investment of five mana beyond the 1st to keep it out, so its usually a two-turn commitment
This rare land currently sells for around $15, and while I expect it to drop from here, I can see it remaining in high demand throughout its life in Standard