Cheapest priced copy (Jumpstart 2022): $0.79 at Card Kingdom, near mint, their price list as of .
Seafloor Oracle 
Creature — Merfolk Wizard · 2/3 · Rare · Rivals of Ixalan · #51
Whenever a Merfolk you control deals combat damage to a player, draw a card.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.79 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 343 | Rare | $0.79 | — |
| The Lost Caverns of Ixalan Commander | 170 | Rare | $0.79 | — |
| Rivals of Ixalan Promos | 51p | Rare | $2.99 | $3.49 |
| Rivals of Ixalan Promos | 51s | Rare | — | $4.49 |
| Rivals of Ixalan | 51 | Rare | $0.79 | $2.99 |
One ruling from Wizards of the Coast
- 19 January 2018If Seafloor Oracle is dealt lethal damage at the same time a Merfolk you control deals combat damage to a player, you'll draw a card.