Cheapest priced copy (Commander 2018): $0.49 at Card Kingdom, near mint, their price list as of .
Gaze of Granite 
Sorcery · Rare · Dragon's Maze · #72
Destroy each nonland permanent with mana value X or less.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
7 printings · $0.49 to $5.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2018 | 181 | Rare | $0.49 | — |
| Commander 2020 | 214 | Rare | $0.49 | — |
| Commander 2021 | 217 | Rare | $0.49 | — |
| Dragon's Maze | 72 | Rare | $0.49 | $2.49 |
| Edge of Eternities Commander | 116 | Rare | $0.49 | — |
| GRN Guild Kit | 61 | Rare | $0.59 | — |
| IDW Comics Inserts | 14 | Rare | $5.49 | — |
2 rulings from Wizards of the Coast
- 15 April 2013The mana value of a creature token is 0 unless that token is a copy of another creature, in which case it copies that creature's mana cost.
- 15 April 2013If a permanent has {X} in its mana cost, the value of that X is 0.