Cheapest priced copy (Lorwyn): $0.35 at Card Kingdom, near mint, their price list as of .
Inner-Flame Igniter 
Creature — Elemental Warrior · 2/2 · Uncommon · Lorwyn · #182
{2}{R}: Creatures you control get +1/+0 until end of turn. If this is the third time this ability has resolved this turn, creatures you control gain first strike until end of turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn | 182 | Uncommon | $0.35 | $0.49 |
| Modern Masters 2015 | 120 | Common | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 1 October 2007You get the bonus only the third time the ability resolves. You won’t get the bonus the fourth, fifth, sixth, or any subsequent times.
- 1 October 2007Counts resolutions, not activations. Any such abilities that are still on the stack won’t count toward the total.
- 1 October 2007When the ability resolves, it counts the number of times that same ability from that this creature has already resolved that turn. It doesn’t matter who controlled the creature or the previous abilities when they resolved. A copy of this ability (created by Rings of Brighthearth, for example) will count toward the total. Abilities from other creatures with the same name don’t count towards the total. Neither does an ability that’s been countered.