Cheapest priced copy (The Lost Caverns of Ixalan Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Arm-Mounted Anchor 
Artifact — Equipment · Rare · The Lost Caverns of Ixalan Commander · #67
Equipped creature gets +2/+2 and has menace.
Whenever equipped creature deals combat damage to a player, draw two cards. Then discard two cards unless you discard a Pirate card.
Equip {2}. This ability costs {2} less to activate if you have one or fewer cards in hand.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan Commander | 67 | Rare | $0.59 | — |
| The Lost Caverns of Ixalan Commander | 99 | Rare | $0.49 | — |
One ruling from Wizards of the Coast
- 10 November 2023You can discard either one Pirate card or two cards which may or may not be Pirates. If you really want to, you can discard two Pirate cards. (Admiral Brass will remember this.)