Cheapest priced copy (Commander 2015): $0.35 at Card Kingdom, near mint, their price list as of .
Faith's Fetters 
Enchantment — Aura · Common · Ravnica Remastered · #18
Enchant permanent
When this Aura enters, you gain 4 life.
Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
14 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2015 | 69 | Common | $0.35 | — |
| Commander Anthology Volume II | 28 | Common | $0.35 | — |
| Commander Legends | 20 | Uncommon | $0.35 | $0.49 |
| Duel Decks: Divine vs. Demonic | 20 | Common | $0.35 | — |
| Duel Decks Anthology: Divine vs. Demonic | 20 | Common | $0.35 | — |
| Eternal Masters | 10 | Uncommon | $0.35 | $0.49 |
| Jumpstart 2022 | 181 | Uncommon | $0.35 | — |
| Foundations Jumpstart | 195 | Common | $0.35 | — |
| Core Set 2021 | 17 | Uncommon | $0.35 | $0.49 |
| The List | UMA-16 | Common | $0.35 | — |
| Ravnica: City of Guilds | 16 | Common | $0.35 | $0.49 |
| Ravnica Remastered | 18 | Common | $0.35 | $0.49 |
| Ravnica Remastered | 307 | Common | $0.35 | $0.49 |
| Ultimate Masters | 16 | Common | $0.35 | $0.79 |
3 rulings from Wizards of the Coast
- 10 November 2020If the target permanent is an illegal target by the time Faith's Fetters tries to resolve, it doesn't resolve. It won't enter the battlefield, so its enters-the-battlefield ability won't trigger.
- 10 November 2020Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords (such as equip) are activated abilities and will have colons in their reminder text. Loyalty abilities of planeswalkers are activated abilities.
- 10 November 2020Faith's Fetters doesn't stop static abilities, triggered abilities, or mana abilities from working. A mana ability is an ability that produces mana, not an ability that costs mana.