Transguild Courier

A plain 3/3 with a single line of rules text that turns it into a deckbuilding key rather than a creature you cast for the body. The golem is all five colors at once, and the entire point lives in how other cards read that property: it answers any "may only block a creature of color X" or "target spell of color Y" clause, satisfies single-handedly any condition asking you to control a creature of each color, and counts as the right color for any effect that checks a permanent's color rather than its mana cost. It does not, however, feed devotion: devotion counts colored mana symbols in a permanent's mana cost, and this one costs with no colored pips, so it provides zero toward any color's devotion total. Knowing that line is the difference between using the card correctly and stranding it. What it actually is, then, is a connector piece: a Rosetta Stone for color-identity matters that lets the rest of a deck stay focused while one body satisfies every "all colors" check at once. The four-mana, no-evasion, no-payoff rate makes it inert in a vacuum; the value never sits in the 3/3, only in whatever reads its colors. It is filler outside a build constructed to exploit the one property it carries, and the design has always been honest about that.