Cheapest priced copy (Revised Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Siren's Call 
Instant · Uncommon · Fourth Edition · #101
Cast this spell only during an opponent's turn, before attackers are declared.
Creatures the active player controls attack this turn if able.
At the beginning of the next end step, destroy all non-Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
12 printings · $0.35 to $64.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Unlimited Edition | 78 | Uncommon | $2.29Out of stock | — |
| 30th Anniversary Edition | 77 | Uncommon | $1.29 | — |
| 30th Anniversary Edition | 374 | Uncommon | $37.99 | — |
| Revised Edition | 80 | Uncommon | $0.35 | — |
| Fourth Edition Foreign Black Border | 101 | Uncommon | — | — |
| Fourth Edition | 101 | Uncommon | $0.35 | — |
| Collectors' Edition | 78 | Uncommon | $2.99Out of stock | — |
| Intl. Collectors' Edition | 78 | Uncommon | $2.49 | — |
| Foreign Black Border | 80 | Uncommon | — | — |
| Limited Edition Alpha | 77 | Uncommon | $64.99Out of stock | — |
| Limited Edition Beta | 78 | Uncommon | $15.99 | — |
| Summer Magic / Edgar | 80 | Uncommon | — | — |
4 rulings from Wizards of the Coast
- 4 October 2004The creature is destroyed if it does not attack because it simply can’t do so legally.
- 4 October 2004It will require creatures with Haste to attack since they are able, but it won’t destroy them if they don’t for some reason.
- 1 February 2009This will destroy creatures that weren’t able to attack because they had been previously tapped.
- 20 September 2013If a turn has multiple combat phases, this spell can only be cast before the beginning of the Declare Attackers Step of the first combat phase in that turn.