Mana Rock

Artifacts whose activated ability taps to add mana, the staple permanent-based acceleration in most formats. Covers cheap workhorses like Sol Ring, Arcane Signet, and Fellwar Stone, zero-cost engines like Mana Crypt, and bigger payoffs like Gilded Lotus. Artifact creatures that tap for mana, such as Palladium Myr, also qualify. Distinct from ramp.mana_dork, which covers nonartifact creatures that tap for mana, and from ramp.ritual, which covers one-shot instants and sorceries that generate mana without sticking around. Also distinct from ramp.treasure_generator, where the mana comes from sacrificing produced tokens rather than tapping the permanent itself.