Cheapest priced copy (Tarkir: Dragonstorm Commander): $3.49 at Card Kingdom, near mint, their price list as of .
Rhox Faithmender 
Creature — Rhino Monk · 1/5 · Rare · Magic 2013 · #29
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
If you would gain life, you gain twice that much life instead.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $3.49 to $12.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 245 | Rare | $3.99 | — |
| Jumpstart | 130 | Rare | $3.99 | — |
| Magic 2013 | 29 | Rare | $4.99 | $12.99 |
| Tarkir: Dragonstorm Commander | 128 | Rare | $3.49 | — |
3 rulings from Wizards of the Coast
- 1 July 2012If an effect sets your life total to a specific number, and that number is higher than your current life total, the effect will cause you to gain life equal to the difference. Rhox Faithmender will then double that number. For example, if you have 3 life and an effect says that your life total "becomes 10," your life total will actually become 17.
- 1 July 2012If you control two Rhox Faithmenders, life you gain will be multiplied by four. Three Rhox Faithmenders will multiply any life gain by eight, and so on.
- 1 July 2012In a Two-Headed Giant game, only Rhox Faithmender's controller is affected by it. If that player's teammate gains life, Rhox Faithmender will have no effect, even when that life gain is applied to the shared team life total.