It is like having a Yawgmoth's Bargain in play except you pay mana rather than life
It gives you good graveyard filling potential, it lets you get things out of your hand in a controlled way, it is still useful if milled directly into the bin and it is super cheap letting you get into things right away
Mayhem Devil (93k), Dictate of Erebos (90k), Moldervine Reclamation (80k), and Fecundity (20k) are all at least playable, and with this treatment, I think the lair and the singles should do well if left alone, and Ill be getting a couple of these Lairs on Monday
My most successful deck was a Milling/Angels deck, and I won more often than not because I either beat them to death with Baneslayer Angel or milled them to death with Bruvac the Grandiloquent
Arena is free-to-play and great for faster paced Standard and Draft gameplay while MTGO is slower and harder to learn than Arena but great for Modern, Pauper, and generally more competitive players
Based on current market prices, Nihil Spellbomb is the most valuable card in The List, worth around $ 2.11