Cheapest priced copy (War of the Spark Promos): $0.99 at Card Kingdom, near mint, their price list as of .
Feather, the Redeemed 
Legendary Creature — Angel · 3/4 · Rare · War of the Spark · #197
Flying
Whenever you cast an instant or sorcery spell that targets a creature you control, exile that card instead of putting it into your graveyard as it resolves. If you do, return it to your hand at the beginning of the next end step.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $0.99 to $27.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| War of the Spark Promos | 197p | Rare | $0.99 | $3.99 |
| War of the Spark Promos | 197s | Rare | — | $5.49 |
| Secret Lair Drop (Miku, the Renowned) | 1602 | Rare | $19.99 | — |
| Secret Lair Drop (Miku, the Renowned) | 1602★ | Rare | — | $23.99 |
| Time Spiral Remastered | 377 | Special | $0.99 | $27.99 |
| War of the Spark | 197 | Rare | $0.99 | $4.99 |
6 rulings from Wizards of the Coast
- 19 March 2021If an instant or sorcery spell's own instructions tell you to exile it or put it anywhere else, it won't try to be put into your graveyard or exiled with Feather's effect, so you won't return it to your hand.
- 19 March 2021If Feather is still on the battlefield as you finish casting an instant or sorcery spell that targets one or more creatures you control, its ability triggers. The replacement effect that exiles that spell and the delayed triggered ability that returns it to your hand both take effect even if Feather leaves the battlefield after this point.
- 19 March 2021If you cast an instant or sorcery spell that you don't own, it won't try to be put into your graveyard, so you won't exile it with Feather's effect or return it to your hand.
- 19 March 2021The spell may have any other targets in addition to a creature you control.
- 19 March 2021If another replacement effect instructs you to exile an instant or sorcery spell, such as that of Dreadhorde Arcanist or the flashback keyword, you may choose to apply Feather's replacement effect first. If you do, Feather's delayed triggered ability will return that card to your hand.
- 19 March 2021If an instant or sorcery spell you cast that targets your creature doesn't resolve for any reason (either because another spell or ability counters it or because all its targets are illegal as it tries to resolve), it won't be exiled. You won't return it to your hand.