Cheapest priced copy (Dominaria United): $0.35 at Card Kingdom, near mint, their price list as of .
Hammerhand 
Enchantment — Aura · Common · Dominaria United · #129
Enchant creature
When this Aura enters, target creature can't block this turn.
Enchanted creature gets +1/+1 and has haste.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
5 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria United | 129 | Common | $0.35 | $0.49 |
| Archenemy: Nicol Bolas | 52 | Common | $0.35 | — |
| Iconic Masters | 132 | Common | $0.35 | $0.49 |
| Magic 2015 | 147 | Common | $0.35 | $0.49 |
| The List | IMA-132 | Common | $0.35 | — |