Cheapest priced copy (Aether Revolt): $5.99 at Card Kingdom, near mint, their price list as of .
Felidar Guardian 
Creature — Cat Beast · 1/4 · Rare · Secret Lair Drop · #1487
When this creature enters, you may exile another target permanent you control, then return that card to the battlefield under its owner's control.
Legal inCommanderModernLegacyVintage
Banned inPioneer
Not legal inBrawlStandardPauper
5 printings · $5.99 to $47.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 19 | Uncommon | $5.99 | $19.99 |
| The List | AER-19 | Uncommon | $5.99 | — |
| Secret Lair Drop | 1487 | Rare | $37.99 | — |
| Secret Lair Drop | 1487★ | Rare | — | $47.99 |
| Secret Lair Drop (Lofi Cat) | 2821 | Rare | $12.99Out of stock | $14.99Out of stock |
2 rulings from Wizards of the Coast
- 9 February 2017If a creature token is exiled this way, it will cease to exist and will not return to the battlefield.
- 9 February 2017After the permanent returns to the battlefield, it will be a new object with no connection to the permanent that was exiled. It won’t have any additional abilities it may have had when it was exiled. Any +1/+1 counters on it or Auras attached to it are removed, and any Equipment will no longer be attached.