Cheapest priced copy (Core Set 2020): $0.35 at Card Kingdom, near mint, their price list as of .
Creeping Trailblazer 
Creature — Elemental · 2/2 · Uncommon · Core Set 2020 · #207
Other Elementals you control get +1/+0.
{2}{R}{G}: This creature gets +1/+1 until end of turn for each Elemental you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Core Set 2020 | 207 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 12 July 2019The size of the bonus is determined as Creeping Trailblazer's last ability begins to resolve; it won't change later in the turn if the number of Elementals you control changes.
- 12 July 2019Because Creeping Trailblazer is itself an Elemental, its last ability will usually give it at least +1/+1.