Cheapest priced copy (Phyrexia: All Will Be One): $0.49 at Card Kingdom, near mint, their price list as of .
Mirran Safehouse 
Artifact · Rare · Phyrexia: All Will Be One · #395
As long as this artifact is on the battlefield, it has all activated abilities of all land cards in all graveyards.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $0.69 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Phyrexia: All Will Be One | 232 | Rare | $0.49 | $0.49 |
| Phyrexia: All Will Be One | 395 | Rare | $0.49 | $0.49 |
| Phyrexia: All Will Be One Promos | 232p | Rare | $0.49 | $0.49 |
| Phyrexia: All Will Be One Promos | 232s | Rare | — | $0.69 |
4 rulings from Wizards of the Coast
- 4 February 2023Mirran Safehouse gains only activated abilities, including activated mana abilites. It doesn't gain keyword abilities (unless those keyword abilities are activated), triggered abilities, or static abilities.
- 4 February 2023Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities; they have colons in their reminder text.
- 4 February 2023If an activated ability of a land card in a graveyard references the card it's printed on by name, treat Mirran Safehouse's version of that ability as though it referenced Mirran Safehouse by name instead.
- 4 February 2023Cards with basic land types intrinsically have the appropriate mana ability, even if it isn't printed in the card's text box. Mirran Safehouse also gains those abilities. For example, if there is a Plains in your graveyard, Mirran Safehouse has "{T}: Add {W}," even though that may not be printed on the Plains itself.