Cheapest priced copy (The Lost Caverns of Ixalan): $0.69 at Card Kingdom, near mint, their price list as of .
Dowsing Device // Geode Grotto 
Artifact // Land — Cave · Uncommon · The Lost Caverns of Ixalan · #146
Whenever this artifact or another artifact you control enters, up to one target creature you control gets +1/+0 and gains haste until end of turn. Then transform this artifact if you control four or more artifacts.
(Transforms from Dowsing Device.)
{T}: Add {R}.
{2}{R}, {T}: Until end of turn, target creature gains haste and gets +X/+0, where X is the number of artifacts you control. Activate only as a sorcery.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.69 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 146 | Uncommon | $0.69 | $1.49 |
One ruling from Wizards of the Coast
- 10 November 2023The value of X for Geode Grotto's last ability is determined only as it resolves. Once that happens, the value of X won't change later in the turn even if the number of artifacts you control changes.