Mattel Action Figure promotional cards: Series 3 is a 2006 Yu-Gi-Oh! set with 10 cards on its set list. Its most valuable cards by market price include Chthonian Soldier, Elemental HERO Flame Wingman, and Elemental HERO Clayman.
Prices as of Oct 12, 2026
| No. | Card | Rarity | Price |
|---|---|---|---|
| MF03-EN001 | Elemental HERO Avian | Normal Parallel Rare | $0.16 |
| MF03-EN002 | Elemental HERO Burstinatrix | Normal Parallel Rare | $0.23 |
| MF03-EN003 | Elemental HERO Clayman | Normal Parallel Rare | $0.27 |
| MF03-EN004 | Elemental HERO Sparkman | Normal Parallel Rare | $0.20 |
| MF03-EN005 | Elemental HERO Bladedge | Normal Parallel Rare | $0.19 |
| MF03-EN006 | Elemental HERO Flame Wingman | Normal Parallel Rare | $0.43 |
| MF03-EN007 | Elemental HERO Bubbleman | Normal Parallel Rare | $0.23 |
| MF03-EN008 | Ancient Gear Golem | Normal Parallel Rare | $0.21 |
| MF03-EN009 | Cyber Dragon | Normal Parallel Rare | $0.21 |
| MF03-EN011 | Chthonian Soldier | Normal Parallel Rare | $0.45 |