Inverter and U/W Control decks were already sort of in the market for cycling lands, and adding triomes can give the marginal upside of being able to Explosives for three, while also allowing those decks to up their land count to stick their otherwise inconsistent colors (something they cant do currently due to need for answer density) Thopter/Sword combo and Urza may not exist in Pioneer, which greatly suppresses the cards power, but it could help decks like Ensoul Artifact get back on stable footing
This "enters or attacks" trigger is insane, because provided you have at least one nonland permanent in your graveyard, Sin is always going to bring it back, and by the time you play him in these colors it's virtually impossible that you don't have stuff to get back
6 Nemata, Grove Guardian The original incarnation of this towering treefolk might just win the award for most instances of the word Saproling on any Magic card
For example, when searching for a white card, you can grab an Iroas, God of Victory, or a Daxos, Blessed by the Sun because theres at least white in their color identities
