Cheapest priced copy (New Capenna Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Obscura Confluence 
Instant · Rare · New Capenna Commander · #176
Choose three. You may choose the same mode more than once.
• Until end of turn, target creature loses all abilities and has base power and toughness 1/1.
• Target creature connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)
• Target player returns a creature card from their graveyard to their hand.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| New Capenna Commander | 76 | Rare | $0.49 | — |
| New Capenna Commander | 176 | Rare | $0.69 | — |
| New Capenna Commander Promos | 76p | Rare | — | $0.99 |
3 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 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 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.