Obelisk of Grixis

The shard mana rock, tuned to a three-color slice rather than a five-color spread. Where a generic fixer hands you any color and asks nothing in return, this one stays inside Grixis: blue, black, and red, a color and its two allies bundled into a single source. That restriction is what the design trades on. A shard-locked rock that ramps and fixes for exactly the deck it belongs to costs less attention to build around than a rainbow source, because every color it produces is a color you were already playing. It comes down ready to tap, then either accelerates your next play or untangles a stranded hand a turn later, doing the unglamorous work that lets a three-color manabase function without warping the rest of the curve. The lineage runs back to the diamond cycle and forward through every faction-coded mana rock since: artifacts that trade universality for thematic coherence, betting that a focused deck would rather have guaranteed access to its three colors than the option of a fourth it never wants. It is a building block, not a payoff, and it asks nothing of you beyond committing to the shard it was cut for.