For a complete rundown on the contents of each Commander Legends: Battle for Baldur's Gate booster type, check out the Commander Legends: Battle for Baldur's Gate Product Overview
Spikes might have taken over Commander in a lot of places (cough, Mobile, Alabama cough), but there are still a ton of adherents who love the slower pace of normal multiplayer and fun stuff, and it's in the color of Cabal Coffers and similar Mega Black Mana Making
Another bad investment would be the lucky stadium promos, they were selling in the high hundreds even thousands in PSA
This ability can be useful in giving white decks an edge against opposing green decks with lots of mana ramp
Each time you venture into a dungeon, you generate the next rooms effect
Necrotic Sliver is a great sliver to the point it is fully playable with no other slivers at all