Cheapest priced copy (Modern Horizons): $0.35 at Card Kingdom, near mint, their price list as of .
Lavabelly Sliver 
Creature — Sliver · 2/2 · Uncommon · Commander Masters · #927
Sliver creatures you control have "When this creature enters, it deals 1 damage to target player or planeswalker and you gain 1 life."
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $17.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 927 | Uncommon | $0.59 | — |
| Modern Horizons 1 Timeshifts | 29 | Uncommon | — | $0.79 |
| Modern Horizons | 207 | Uncommon | $0.35 | $2.99 |
| Secret Lair Drop | 665 | Rare | — | $17.99 |