Cheapest priced copy (Amonkhet): $0.35 at Card Kingdom, near mint, their price list as of .
Faith of the Devoted 
Enchantment · Uncommon · Amonkhet · #90
Whenever you cycle or discard a card, you may pay {1}. If you do, each opponent loses 2 life and you gain 2 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Amonkhet | 90 | Uncommon | $0.35 | $2.99 |
| Commander 2019 | 112 | Uncommon | $0.35 | — |
6 rulings from Wizards of the Coast
- 18 April 2017If a player discards a card during their cleanup step due to having too many cards in hand, any appropriate abilities that trigger on discarding that card trigger. If this happens, those triggered abilities are put onto the stack and players receive priority in that cleanup step to cast spells or activate abilities (normally, no players may take actions during a cleanup step). Another cleanup step is created following that one.
- 18 April 2017In a Two-Headed Giant game, the triggered ability of Faith of the Devoted causes the opposing team to lose 4 life and you gain 2 life.
- 18 April 2017Some cards have an ability that triggers whenever you cycle any card. These triggered abilities resolve before you draw from the cycling ability.
- 18 April 2017An ability that triggers whenever you discard a card doesn't give you permission to discard cards. You'll need another effect that instructs or allows you to discard them.
- 18 April 2017An ability that triggers whenever you "cycle or discard" a card triggers only once if you cycle a card. The ability "Whenever you discard a card" is functionally identical to this ability; cycling is mentioned for clarity.
- 18 April 2017While resolving the triggered ability of Faith of the Devoted, you can't pay {1} multiple times to multiply the effect.