Cheapest priced copy (Onslaught): $2.29 at Card Kingdom, near mint, their price list as of .
Riptide Entrancer 
Creature — Human Wizard · 1/1 · Rare · Onslaught · #108
Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (This effect lasts indefinitely.)
Morph {U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $2.29 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Onslaught | 108 | Rare | $2.29 | $7.99 |