Rustvale Bridge

Artifact lands have always carried a specific liability: they count as artifacts, so they feed affinity, metalcraft, and every "artifacts you control" trigger, but that same artifact status makes them collateral in any board wipe that touches artifacts, and land destruction can pick them off from the other side. This two-color cycle answers that flaw with a keyword the older generation never had. Indestructibility means the Boros deck that floods the battlefield with artifacts (inviting mass artifact removal by its own construction) keeps its red-white source online through the sweeper it provokes. Exile, bounce, and sacrifice effects still get around it. The price is the same one artifact-fixing has always paid: it enters tapped, with no shockland-style life payment offered as an alternative. What redeems that slow start is the double return from a single land drop: two colors of fixing plus one more tick on the artifact count a metalcraft or affinity engine is racing toward, all from a permanent that shrugs off nearly everything aimed at it.