Cheapest priced copy (Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Ixalli's Keeper 
Creature — Human Shaman · 2/2 · Common · Ixalan · #193
{7}{G}, {T}, Sacrifice this creature: Target creature gets +5/+5 and gains trample until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ixalan | 193 | Common | $0.35 | $0.49 |