Cheapest priced copy (Planar Chaos): $0.35 at Card Kingdom, near mint, their price list as of .
Dunerider Outlaw 
Creature — Human Rebel Rogue · 1/1 · Uncommon · Time Spiral Remastered · #112
Protection from green
At the beginning of each end step, if this creature dealt damage to an opponent this turn, put a +1/+1 counter on it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planar Chaos | 86 | Uncommon | $0.35 | $0.79 |
| Time Spiral Remastered | 112 | Uncommon | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 19 March 2021Dunerider Outlaw's triggered ability gives it at most one +1/+1 counter each turn, regardless of how many opponents were dealt damage beyond the first.
- 19 March 2021If Dunerider Outlaw dealt damage to an opponent who later left the game before that turn's end step, its ability still gives it a +1/+1 counter.
- 19 March 2021Dunerider Outlaw's triggered ability checks to see if it dealt damage during the turn to an opponent of its current controller. If it dealt damage to player A, then player A takes control of it, the ability doesn't trigger.