Cheapest priced copy (Commander 2014): $0.35 at Card Kingdom, near mint, their price list as of .
Wing Shards 
Instant · Uncommon · Commander 2014 · #97
Target player sacrifices an attacking creature of their choice.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
9 printings · $0.35 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2014 | 97 | Uncommon | $0.35 | — |
| Commander 2017 | 79 | Uncommon | $0.35 | — |
| Friday Night Magic 2007 | 9 | Rare | — | $2.49 |
| Iconic Masters | 38 | Uncommon | $0.35 | $0.49 |
| Modern Horizons | 38 | Uncommon | $0.35 | $0.49 |
| The List | IMA-38 | Uncommon | $0.35 | — |
| Scourge | 25 | Uncommon | $0.35 | $4.99 |
| World Championship Decks 2003 | dz25sb | Uncommon | $0.79 | — |
| World Championship Decks 2004 | jn25 | Uncommon | $0.35 | — |
6 rulings from Wizards of the Coast
- 14 June 2019If you cast Wing Shards after combat damage has been dealt, only creatures that survived combat can be sacrificed.
- 14 June 2019The copies storm creates are created on the stack, so they’re not cast. Abilities that trigger when a player casts a spell (such as storm) won’t trigger.
- 14 June 2019The storm ability and the copies it creates all resolve before the spell with storm. They resolve even if the spell with storm is countered.
- 14 June 2019Storm counts spells cast before the spell with storm was cast. Spells cast after the spell with storm was cast but before the storm ability resolves aren’t counted.
- 14 June 2019Wing Shards doesn’t target the creature to be sacrificed. The target player chooses the creature as it resolves.
- 14 June 2019An “attacking creature” is one that has been declared as an attacker or put onto the battlefield attacking during a turn’s combat. Unless that creature leaves combat, it continues to be an attacking creature through the end of combat step, even if the player it was attacking has left the game or the planeswalker it was attacking has left combat.