As long as you keep your graveyard filled with powerful creatures, 5 mana to reanimate and attack with one over and over again is a pretty good deal
Plus, even the bad mythics (perhaps outside of Apex of Power) aren't really that bad, with the Elder Dragons being worth a couple of bucks (and being relevant for Commander) and Bone Dragon being a sleeper for post-rotation Standard, assuming that Golgari has some sweet graveyard synergies in Guilds of Ravnica
Much of Nihiloors power comes from the huge swing in board control you get just by resolving them and triggering their ETB
$3.99 Swiftfoot Boots Final Fantasy Commander Decks $2.49 Swords to Plowshares Final Fantasy Commander Decks $0.35 Path of Ancestry Final Fantasy Commander Decks $0.99 Arcane Signet (0052) Aetherdrift Commander Decks $2.29 Trailblazer's Boots Final Fantasy Commander Decks $0.35 Path of Ancestry Marvel Super Heroes Eternal-Legal $5.99 Lightning Greaves Final Fantasy Commander Decks $0.99 Arcane Signet Secrets of Strixhaven Commander Decks $2.79 Sol Ring Secrets of Strixhaven Commander Decks $0.99 Cultivate Final Fantasy Commander Decks $0.35 Terramorphic Expanse Secrets of Strixhaven $0.49 Key to the City Final Fantasy Commander Decks 0 results found
We loved the sets mad scientist aesthetic and crazy contraptions
They are certainly not as valuable as the 60s Posters , but they are treated as High-End cards nonetheless