Cheapest priced copy (Nemesis): $0.35 at Card Kingdom, near mint, their price list as of .
Sivvi's Ruse 
Instant · Uncommon · Nemesis · #21
If an opponent controls a Mountain and you control a Plains, you may cast this spell without paying its mana cost.
Prevent all damage that would be dealt this turn to creatures you control.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Nemesis | 21 | Uncommon | $0.35 | $5.99 |