Cheapest priced copy (Commander 2013): $1.79 at Card Kingdom, near mint, their price list as of .
Tidal Force 
Creature — Elemental · 7/7 · Rare · Commander 2013 · #62
At the beginning of each upkeep, you may tap or untap target permanent.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $1.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 62 | Rare | $1.79 | — |