Cheapest priced copy (Kaldheim): $0.35 at Card Kingdom, near mint, their price list as of .
Basalt Ravager 
Creature — Giant Wizard · 4/2 · Uncommon · Kaldheim · #122
When this creature enters, it deals X damage to any target, where X is the greatest number of creatures you control that have a creature type in common.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kaldheim | 122 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 5 February 2021The amount of damage dealt is calculated as the triggered ability resolves based on the creatures you control at that time, including Basalt Ravager itself if it’s still under your control. You’ll always use the greatest number possible. You don’t need to choose any creature types. For example, if you control a Giant Wizard, a Giant Warrior, an Elf Warrior, and a Kor Warrior at that time, Basalt Ravager will deal 3 damage.