Arcbound Wanderer

The Golem at the top of the Arcbound family is also the strangest member of it, because its two keywords are pulling against the deck that would naturally want each one. Sunburst sizes the body by the number of colors of mana spent to cast it, so a colorless artifact shell pays six mana for a 0/0 that hits the battlefield dead. The reward only arrives when the manabase spreads wide: every additional color of source is another +1/+1 counter walking in, and at full stretch the creature both fields a sizable body and stockpiles that many counters to hand off. Modular is where the wager pays out, moving all of those counters onto a single target artifact creature when it dies, so the value does not vanish with the body. The design knot is that the rest of the Arcbound creatures are mono-colored artifact pieces happy in a fast aggressive shell, while this one demands a five-color engine just to be worth its cost, then asks for a second artifact creature ready to inherit the pile. It is the line in the cycle where the modular mechanic, which usually makes these creatures feel cheap and resilient, gets bolted to a casting requirement that wants an entirely different deck. Nothing else in the family asks its pilot to bend the manabase this far before the counters start counting.