Cheapest priced copy (Innistrad: Double Feature): $0.35 at Card Kingdom, near mint, their price list as of .
Flame Channeler // Embodiment of Flame 
Creature — Human Wizard // Creature — Elemental Wizard · 2/2 · Uncommon · Innistrad: Midnight Hunt · #141
When a spell you control deals damage, transform this creature.
Whenever a spell you control deals damage, put a flame counter on this creature.
{1}, Remove a flame counter from this creature: Exile the top card of your library. You may play that card this turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 141 | Uncommon | $0.35 | $0.49 |
| Innistrad: Midnight Hunt | 141 | Uncommon | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 24 September 2021"A spell you control" means a spell on the stack. Usually, spells on the stack can deal damage only as part of their own resolution.
- 24 September 2021A spell that becomes a permanent and then deals damage, such as one that has a triggered ability when it enters the battlefield, will not cause Flame Channeler's abilities to trigger.
- 24 September 2021Some spells cause other objects to deal damage, such as spells that have two creatures fight. In those cases, it's those other objects that are dealing damage, not the spell itself, and this will not cause Flame Channeler's abilities to trigger.