Cheapest priced copy (Streets of New Capenna Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Reservoir Kraken 
Creature — Kraken · 6/6 · Rare · Streets of New Capenna · #413
Trample, ward {2}
At the beginning of each combat, if this creature is untapped, any opponent may tap an untapped creature they control. If they do, tap this creature and create a 1/1 blue Fish creature token with "This token can't be blocked."
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Streets of New Capenna Promos | 56p | Rare | $0.49 | $0.49 |
| Streets of New Capenna Promos | 56s | Rare | — | $0.99Out of stock |
| Streets of New Capenna | 56 | Rare | $0.49 | $0.49 |
| Streets of New Capenna | 413 | Rare | $0.59 | $0.49 |
2 rulings from Wizards of the Coast
- 29 April 2022Players won't know which player or planeswalker Reservoir Kraken will attack, if any, when deciding whether to tap an untapped creature for its triggered ability.
- 29 April 2022Each opponent in turn order may choose to tap an untapped creature as Reservoir Kraken's triggered ability resolves, even if a player earlier in the turn order already chose to tap a creature. Reservoir Kraken's controller will create a maximum of one Fish creature token each combat, no matter how many creatures were tapped.