Cheapest priced copy (Fate Reforged): $0.35 at Card Kingdom, near mint, their price list as of .
Wardscale Dragon 
Creature — Dragon · 4/4 · Uncommon · Fate Reforged · #30
Flying
As long as this creature is attacking, defending player can't cast spells.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fate Reforged | 30 | Uncommon | $0.35 | $0.79 |
2 rulings from Wizards of the Coast
- 24 November 2014“Defending player” refers to the player Wardscale Dragon is attacking or the controller of the planeswalker Wardscale Dragon is attacking. In multiplayer formats that allow attacking multiple players, your other opponents can still cast spells, even if you control other creatures attacking those players or planeswalkers those players control.
- 24 November 2014The defending player can still activate abilities or take special actions, such as turning a face-down creature face up.