Commander's Plate

Protection is a variable keyword, and this Equipment's entire power curve turns on that variability. A generic protection grant fixes its list at printing time; this one instead reads the color identity of the deck it lives in and shields against everything that identity leaves out. Build around a mono-white general and the equipped creature becomes untouchable by four colors' worth of blocks, targeted removal, and burn, since protection also erases combat and non-combat damage from those sources. Widen to a four- or five-color commander and the shield thins toward nothing. The scaling runs backward from most cards: the narrower your build, the wider the coverage, so the payout is set by the player who committed to a tight identity rather than by any number on the artifact. The +3/+3 is almost incidental; the reduced equip cost onto your commander specifically rewards suiting up the one creature the singleton-general format is built around, and turning that legend into something the table cannot answer. The design's cleverness sits in that handoff: it gives the balancing lever to the deckbuilder, and the card's ceiling becomes a direct function of how much color you were willing to give up to reach it.