Cheapest priced copy (Core Set 2020): $0.35 at Card Kingdom, near mint, their price list as of .
Mask of Immolation 
Artifact — Equipment · Uncommon · Core Set 2020 · #151
When this Equipment enters, create a 1/1 red Elemental creature token, then attach this Equipment to it.
Equipped creature has "Sacrifice this creature: It deals 1 damage to any target."
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Core Set 2020 | 151 | Uncommon | $0.35 | $0.99 |
2 rulings from Wizards of the Coast
- 12 July 2019The equipped creature is the source of the activated ability and the source of the damage, not Mask of Immolation. This means that a green creature equipped by Mask of Immolation may deal damage to a creature with protection from red but may not deal damage to a creature with protection from green.
- 12 July 2019No player may take any actions between the time you create the Elemental token and the time Mask of Immolation becomes attached to it.