Dreamstone Hedron

A six-mana rock that pays you back twice: first as a triple-colorless ramp source, then as a Divination-plus when the board has stalled and the mana stops mattering. That second clause does the heavy lifting. Most ramp artifacts go inert once you have spent the mana they helped cast, dead cardboard occupying a slot that could have drawn you something. This one carries its own exit ramp: when the colorless triple is no longer the constraint, three mana and the artifact itself convert into three fresh cards. It is built for the kind of mana base that wants enormous, mana-hungry payoffs but cannot afford to be flooded on accelerants in the late game, the exact friction a colorless-leaning ramp deck runs into. The strict colorless output is its own honesty check: it pours out generic mana for big artifacts, Eldrazi, and X-spells, but it will never paper over a colored requirement, so the decks that want it are the ones already leaning hard on generic costs. The cost structure cuts in both directions: six to cast is steep enough that you are committing to a deck that genuinely needs the flood, and the draw mode asks for three additional mana plus the rock, so cashing in is never free and never an early play. Few accelerants resolve the central problem of ramp this cleanly: a mana source that refuses to become a liability the moment its mana is spent.