Like most Magic: The Gathering cards, the value of Emerald Dragonfly depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Legends)
Scatterbug 1.7 Perfect Order OKACHEKE Lapras ex 1.6 Perfect Order 5ban Graphics Shaymin 2.7 Perfect Order soino misoki Mawile 2.3 Perfect Order OKACHEKE Fletchinder 3.2 Perfect Order Sumiyoshi Kizuki Diggersby 2.0 Perfect Order Mousho Talonflame 3.6 Perfect Order OKACHEKE Mega Skarmory ex 2.8 Perfect Order 5ban Graphics Potion 2.7 Perfect Order Ayaka Yoshida
Tombstalker was a big deal back in the day but fell off massively after Baneslayer Angel warped the format
not only does it have a massive 330 HP which makes it very difficult to get rid of before it deals serious damage, but it has several other stand out abilities thatll make you dread seeing this Charizard ex being deployed to your opponents play area
Goblins was my introduction to competitive Magic way back in 2003
If you're interested in the competitive successes of those cards, I'd recommend reading my DP-SF article
