Manalith

Pay three generic mana once, and you own a permanent that taps for any color on every turn after, no further cost attached. That is the cleanest possible statement of color fixing: a mana rock that ramps you (one extra mana per turn is exactly what acceleration means) while smoothing any combination of colors you can name. It sits at the bottom rung of the rock hierarchy not because it does its job poorly but because its job is the minimum. Coalition Relic stores charge counters and can stockpile two mana; Chromatic Lantern turns your lands themselves into rainbow sources. This asks nothing of your colors, builds nothing toward a second effect, and gives back one mana of whatever you need, every turn, forever. The flatness is the function. Every era of Magic needs a teaching example of fixing that introduces a single concept and no others, a rock that a player assembling their first many-color deck can plug in without learning a new keyword or tracking a counter. That role keeps it printed at the most beginner-facing rarity and in starter products, one tier below every rock that eventually learned to do more than tap for a color. An optimized list leaves it on the bench precisely because it does only the thing, but the thing it does is the baseline that all the fancier rocks are measured against.