Cheapest priced copy (Masters 25): $0.35 at Card Kingdom, near mint, their price list as of .
Brine Elemental 
Creature — Elemental · 5/4 · Uncommon · Time Spiral · #50
Morph {5}{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.)
When this creature is turned face up, each opponent skips their next untap step.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
7 printings · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Masters 25 | 47 | Uncommon | $0.35 | $0.99 |
| Commander 2014 | 99 | Uncommon | $0.35 | — |
| Duel Decks: Jace vs. Chandra | 18 | Uncommon | $0.49 | — |
| Duel Decks Anthology: Jace vs. Chandra | 18 | Uncommon | $0.35 | — |
| The List | A25-47 | Uncommon | $0.35 | — |
| Time Spiral | 50 | Uncommon | $0.35 | $1.99 |
| Time Spiral Remastered | 55 | Uncommon | $0.35 | $1.49 |
2 rulings from Wizards of the Coast
- 19 March 2021If an effect says that something doesn't untap during its controller's next untap step, that effect applies to the next untap step that isn't skipped.
- 19 March 2021Skipping your "next" untap step is cumulative. If a player turns two Brine Elementals face up on the same turn, that player's opponents will each skip their next two untap steps.