Cheapest priced copy (Theros Beyond Death): $0.35 at Card Kingdom, near mint, their price list as of .
Altar of the Pantheon 
Artifact · Common · Theros Beyond Death · #231
Your devotion to each color and each combination of colors is increased by one.
{T}: Add one mana of any color. If you control a God, a Demigod, or a legendary enchantment, you gain 1 life.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | THB-231 | Common | $0.49 | — |
| Theros Beyond Death | 231 | Common | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 24 January 2020The last ability of Altar of the Pantheon is a mana ability. It doesn't use the stack and can't be responded to. You'll immediately add mana and gain 1 life, if applicable.
- 24 January 2020Your devotion to two colors (for example, your devotion to red and green) is increased by one, not by two or three.
- 24 January 2020If Altar of the Pantheon loses its abilities, you'll still get a bonus to your devotion. This is because its effect is applied before any effect that would make it lose its abilities.
- 24 January 2020You gain just 1 life, no matter how many Gods, Demigods, and/or legendary enchantments you control beyond the first.