FOILCheapest priced copy (Zendikar Rising Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Confounding Conundrum 
Enchantment · Rare · Zendikar Rising Promos · #53s
When this enchantment enters, draw a card.
Whenever a land an opponent controls enters, if that player had another land enter the battlefield under their control this turn, they return a land they control to its owner's hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Zendikar Rising Promos | 53p | Rare | $0.49 | $0.79 |
| Zendikar Rising Promos | 53s | Rare | — | $1.99 |
| Zendikar Rising | 53 | Rare | $0.49 | $0.79 |
| Zendikar Rising | 326 | Rare | $0.59 | $0.49 |
2 rulings from Wizards of the Coast
- 25 September 2020The player may return any land they control to its owner's hand, not just one of those that entered this turn.
- 25 September 2020If an opponent has had no lands enter under their control and then two or more lands enter at the same time, Confounding Conundrum's second ability triggers for each of those lands.