Cheapest priced copy (Foundations Jumpstart): $0.49 at Card Kingdom, near mint, their price list as of .
Maul of the Skyclaves 
Artifact — Equipment · Rare · Zendikar Rising · #27
When this Equipment enters, attach it to target creature you control.
Equipped creature gets +2/+2 and has flying and first strike.(It deals combat damage before creatures without first strike.)
Equip {2}{W}{W}
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
7 printings · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 223 | Rare | $0.49 | — |
| March of the Machine Commander | 195 | Rare | $0.59 | — |
| Phyrexia: All Will Be One Commander | 80 | Rare | $0.59 | — |
| Zendikar Rising Promos | 27p | Rare | $0.99 | $1.99 |
| Zendikar Rising Promos | 27s | Rare | — | $1.29 |
| Zendikar Rising | 27 | Rare | $0.49 | $0.79 |
| Zendikar Rising | 320 | Rare | $0.79 | $0.99 |
2 rulings from Wizards of the Coast
- 25 September 2020If the target creature becomes an illegal target, the Equipment remains on the battlefield unattached.
- 25 September 2020Attaching an Equipment with its enters-the-battlefield triggered ability isn't the same as using its equip ability. You don't pay mana for the attachment, and if the Equipment enters at a time you couldn't cast a sorcery, you can still attach it to a creature you control.