Cheapest priced copy (Commander 2011): $0.35 at Card Kingdom, near mint, their price list as of .
Fists of Ironwood 
Enchantment — Aura · Common · Modern Masters 2017 · #126
Enchant creature
When this Aura enters, create two 1/1 green Saproling creature tokens.
Enchanted creature has trample.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
4 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2011 | 156 | Common | $0.35 | — |
| Modern Masters 2017 | 126 | Common | $0.35 | $0.49 |
| Ravnica: City of Guilds | 164 | Common | $0.35 | $0.79 |
| Ravnica Remastered | 139 | Common | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 14 March 2017The Saproling tokens aren't created until after Fists of Ironwood is on the battlefield, so you can't cast Fists of Ironwood on one of those tokens.
- 14 March 2017If the target creature is an illegal target when Fists of Ironwood tries to resolve, Fists of Ironwood won't resolve and won't enter the battlefield. You won't create Saproling tokens.
- 14 March 2017You create the Saproling tokens, even if Fists of Ironwood enters the battlefield attached to another player's creature.