Cheapest priced copy (Fate Reforged): $0.49 at Card Kingdom, near mint, their price list as of .
Scroll of the Masters 
Artifact · Rare · Fate Reforged · #163
Whenever you cast a noncreature spell, put a lore counter on this artifact.
{3}, {T}: Target creature you control gets +1/+1 until end of turn for each lore counter on this artifact.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fate Reforged | 163 | Rare | $0.49 | $1.99 |
| The List | FRF-163 | Rare | $0.59 | — |
2 rulings from Wizards of the Coast
- 24 November 2014Count the number of lore counters on Scroll of the Masters as the activated ability resolves to determine how big a bonus the target creature gets. If Scroll of the Masters isn’t on the battlefield at that time, use the number of lore counters on it when it left the battlefield.
- 24 November 2014Once the activated ability has resolved, changing the number of lore counters on Scroll of the Masters won’t affect the bonus that activation granted.