This ingenious loop turns a modest common into an unstoppable card-drawing engine by marrying creature untap mechanics with pure hand economy. Grand Architect plays a double role here, first turning Sphinx's Disciple blue so it can be tapped for mana, and then serving as the physical mechanism that taps the creature to generate colorless mana. Whenever Sphinx's Disciple untaps, its inspired ability triggers to draw you a card, which directly feeds the discard cost of Mind Over Matter. By continuously discarding cards to Mind Over Matter to untap the Disciple, you trigger endless draws and rummaging while generating near-infinite mana restricted to artifact spells and abilities.