FOILCheapest priced copy (Dominaria): $0.35 at Card Kingdom, near mint, their price list as of .
Hallar, the Firefletcher 
Legendary Creature — Elf Archer · 3/3 · Uncommon · Dominaria Promos · #196s
Trample
Whenever you cast a spell, if that spell was kicked, put a +1/+1 counter on Hallar, then Hallar deals damage equal to the number of +1/+1 counters on it to each opponent.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria | 196 | Uncommon | $0.35 | $0.49 |
| Dominaria Promos | 196s | Uncommon | — | $0.49 |
3 rulings from Wizards of the Coast
- 27 April 2018If Hallar leaves the battlefield after its last ability has triggered but before it resolves, you don't put a +1/+1 counter on anything as the ability resolves, but you do use the number of +1/+1 counters that were on Hallar before it left the battlefield to determine how much damage it deals to each opponent.
- 27 April 2018In a Two-Headed Giant game, Hallar's last ability causes the opposing team to lose 2 life for each +1/+1 counter on it.
- 27 April 2018Hallar's last ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered.