Cheapest priced copy (Commander 2020): $13.99 at Card Kingdom, near mint, their price list as of .
Silent Arbiter 
Artifact Creature — Construct · 1/5 · Rare · Fifth Dawn · #150
No more than one creature can attack each combat.
No more than one creature can block each combat.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $13.99 to $39.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fifth Dawn | 150 | Rare | $19.99 | $39.99 |
| Commander 2020 | 250 | Rare | $13.99 | — |
| Commander Masters | 972 | Rare | $14.99 | — |
| Conspiracy | 204 | Rare | $15.99 | $34.99 |