Cheapest priced copy (Double Masters 2022): $0.35 at Card Kingdom, near mint, their price list as of .
Fireblade Artist 
Creature — Human Shaman · 2/2 · Uncommon · Ravnica Allegiance · #172
Haste
At the beginning of your upkeep, you may sacrifice a creature. When you do, this creature deals 2 damage to target opponent or planeswalker.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters 2022 | 214 | Common | $0.35 | $0.49 |
| Ravnica Allegiance | 172 | Uncommon | $0.35 | $0.79 |
One ruling from Wizards of the Coast
- 25 January 2019Fireblade Artist's triggered ability goes on the stack without a target. While that ability is resolving, you may sacrifice a creature. When you do, the reflexive triggered ability triggers and you pick a target opponent or planeswalker to be dealt damage. This is different from effects that say "If you do . . ." in that players may take actions after you've sacrificed the creature but before damage is dealt.