Palladium Myr

Two colorless from a single tap is the line that separates this from the field of two-drop accelerators. The standard cheap rock (Mind Stone, the signets, the talismans) produces one mana per activation and starts paying you back the turn after it lands; this one waits an extra turn to come online but then nets a full two each tap, which is the difference between drip-feeding a curve and powering it. The colorless output is the constraint that pays for the rate: it pours cleanly into generic costs, eldrazi spells, and artifact-heavy decks, but it fixes nothing, so it belongs to strategies spending on big colorless price tags rather than greedy multicolor ones. Being an artifact creature rather than a noncreature rock cuts both ways: it answers to creature tutors and slots into Myr synergies, but it also dies to a far wider band of removal than a Mind Stone ever sees. The niche it fills sits between the early one-mana-per-turn rocks and Worn Powerstone, which taps for the same two but offers no body at all; this gives up nothing in output to that comparison while adding a 2/2 that can block, attack, or wear equipment between taps. It is the rare acceleration piece that also holds the ground it is buying time on.