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
If an opponent has eight or more cards in their graveyard, you may choose both
Get specific cuts, high-impact adds, mana curve fixes, missing-staple alerts, synergy gaps, and a clear upgrade path
If the target creature becomes an illegal target, Concealed Weapon remains on the battlefield unattached
Much of Nihiloors power comes from the huge swing in board control you get just by resolving them and triggering their ETB