Cheapest priced copy (Foundations): $0.35 at Card Kingdom, near mint, their price list as of .
Ruby, Daring Tracker 
Legendary Creature — Human Scout · 1/2 · Uncommon · Wilds of Eldraine · #212
Haste (This creature can attack and {T} as soon as it comes under your control.)
Whenever Ruby attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn.
{T}: Add {R} or {G}.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.35 to $12.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 245 | Uncommon | $0.35 | $0.49 |
| Planeswalker Championship Promos | 2024-02 | Rare | — | $12.99 |
| Wilds of Eldraine | 212 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 1 September 2023If you controlled a creature with power 4 or greater when you declared Ruby as an attacker, it doesn't matter whether you still control one as her triggered ability resolves. Ruby will still get +2/+2 until end of turn.