Cheapest priced copy (New Phyrexia): $0.49 at Card Kingdom, near mint, their price list as of .
Slag Fiend 
Creature — Phyrexian Construct · */* · Rare · New Phyrexia · #95
Slag Fiend's power and toughness are each equal to the number of artifact cards in all graveyards.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| New Phyrexia | 95 | Rare | $0.49 | $1.49 |
| The List | NPH-95 | Rare | $0.49 | — |
One ruling from Wizards of the Coast
- 1 June 2011Slag Fiend’s power- and toughness-setting ability works in all zones, not just on the battlefield.