Cheapest priced copy (Streets of New Capenna Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Obscura Interceptor 
Creature — Octopus Wizard · 3/1 · Rare · Streets of New Capenna Promos · #209p
Flash
Lifelink
When this creature enters, it connives. When it connives this way, return up to one target spell to its owner's hand. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Streets of New Capenna Promos | 209p | Rare | $0.49 | $0.49 |
| Streets of New Capenna Promos | 209s | Rare | — | $0.49 |
| Streets of New Capenna | 209 | Rare | $0.49 | $0.49 |
| Streets of New Capenna | 324 | Rare | $0.49 | $0.49 |
| Streets of New Capenna | 389 | Rare | — | $0.79Out of stock |
4 rulings from Wizards of the Coast
- 29 April 2022If no card is discarded, most likely because that player's hand is empty and an effect says they can't draw cards, the conniving creature does not receive a +1/+1 counter.
- 29 April 2022Once an ability that causes a creature to connive begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the conniving creature after you discard a nonland card but before it receives a counter.
- 29 April 2022If a resolving spell or ability instructs a specific creature to connive but that creature has left the battlefield, the creature still connives. If you discard a nonland card this way, you won't put a +1/+1 counter on anything. Abilities that trigger “when [that creature] connives” will trigger.
- 29 April 2022If a resolving spell or ability instructs a specific creature to connive but that creature has left the battlefield, the creature still connives. Abilities that trigger “when [that creature] connives,” such as that of Obscura Interceptor, will trigger.