Cheapest priced copy (Commander Legends): $2.29 at Card Kingdom, near mint, their price list as of .
Hullbreacher 
Creature — Merfolk Pirate · 3/2 · Rare · Mystery Booster 2 · #124
Flash
If an opponent would draw a card except the first one they draw in each of their draw steps, instead you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Legal inLegacyVintage
Banned inCommander
Not legal inBrawlStandardPioneerModernPauper
3 printings · $2.29 to $34.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 74 | Rare | $2.29 | $5.99 |
| Commander Legends | 635 | Rare | $4.99 | $34.99 |
| Mystery Booster 2 | 124 | Rare | $2.79 | — |
2 rulings from Wizards of the Coast
- 10 November 2020If you control multiple Hullbreachers while an opponent would draw a card except their first one in their draw step, you'll create only one Treasure.
- 10 November 2020If multiple replacement effects apply to the same card draw, the player drawing the card chooses the order in which to apply them.