Cheapest priced copy (The List): $0.49 at Card Kingdom, near mint, their price list as of .
Cranial Plating 
Artifact — Equipment · Common · Fifth Dawn · #113
Equipped creature gets +1/+0 for each artifact you control.
{B}{B}: Attach this Equipment to target creature you control.
Equip {1}
Legal inCommanderModernLegacyVintage
Banned inPauper
Not legal inBrawlStandardPioneer
11 printings · $0.49 to $29.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters | 245 | Uncommon | $0.59 | $0.79 |
| Warhammer 40,000 Commander | 236 | Uncommon | $0.79 | — |
| Warhammer 40,000 Commander | 236★ | Uncommon | — | — |
| Fifth Dawn | 113 | Common | $0.69 | $8.99 |
| The Brothers' War Commander | 136 | Uncommon | $0.69 | — |
| Commander 2016 | 249 | Uncommon | $0.59 | — |
| Planechase | 110 | Common | $0.79 | — |
| Modern Masters 2015 | 206 | Uncommon | $0.59 | $0.99 |
| The List | TSR-392 | Common | $0.49 | — |
| Time Spiral Remastered | 392 | Special | $0.59 | $29.99 |
| World Championship Decks 2004 | ap113 | Common | $0.79 | — |
2 rulings from Wizards of the Coast
- 19 March 2021Cranial Plating is counted by its own ability, so it gives at least +1/+0.
- 19 March 2021Cranial Plating's first activated ability is similar to an equip ability, but it's not an equip ability. Most importantly, it can be activated any time you could cast an instant, even during another player's turn.