Cheapest priced copy (Commander Masters): $0.49 at Card Kingdom, near mint, their price list as of .
Maelstrom Wanderer 
Legendary Creature — Elemental · 7/5 · Rare · Lorwyn Eclipsed Commander · #127
Creatures you control have haste.
Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order. Then do it again.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
10 printings · $0.49 to $17.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander's Arsenal | 11 | Mythic | — | $9.49 |
| Commander Masters | 344 | Rare | $0.49 | $0.99 |
| Commander Masters | 583 | Rare | — | — |
| Commander Masters | 684 | Rare | $2.29 | $4.99 |
| Commander Legends | 526 | Mythic | — | — |
| Lorwyn Eclipsed Commander | 127 | Rare | $0.49 | — |
| Eternal Masters | 204 | Mythic | $1.29 | $7.99 |
| Planechase 2012 | 101 | Mythic | $2.29 | — |
| Planechase Anthology | 101 | Mythic | $1.49 | — |
| Secret Lair Drop | 1319 | Mythic | $11.99 | $17.99 |
3 rulings from Wizards of the Coast
- 10 November 2020Each instance of cascade triggers and resolves separately. The spell you cast due to the first cascade ability will go on the stack on top of the second cascade ability. That spell will resolve before you exile cards for the second cascade ability.
- 10 November 2020Maelstrom Wanderer gives itself haste.
- 10 November 2020No matter what spell you cast with the first cascade trigger (or with any cascade triggers that result from casting that spell), the second cascade trigger will look for a spell with mana value less than Maelstrom Wanderer's mana value of 8.