Cheapest priced copy (Tales of Middle-earth Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Call for Aid 
Sorcery · Rare · Tales of Middle-earth Commander · #30
Gain control of all creatures target opponent controls until end of turn. Untap those creatures. They gain haste until end of turn. You can't attack that player this turn. You can't sacrifice those creatures this turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tales of Middle-earth Commander | 30 | Rare | $0.49 | — |
| Tales of Middle-earth Commander | 113 | Rare | $0.99 | — |
| Tales of Middle-earth Commander | 432 | Rare | $2.29 | $2.99 |
2 rulings from Wizards of the Coast
- 16 June 2023If an effect instructs you to sacrifice a creature, and you control any creatures other than the ones you gained control of with Call for Aid this turn, you must sacrifice one of them. You can't try to sacrifice one of the creatures you gained control of, fail, and therefore ignore the effect.
- 16 June 2023You can't sacrifice the creatures you gained control of with Call for Aid this turn for any reason. If an effect instructs you to sacrifice one of them, you can't and it remains on the battlefield. You also can't sacrifice any of them to pay a cost that requires you to sacrifice a creature.