Cheapest priced copy (Edge of Eternities): $0.49 at Card Kingdom, near mint, their price list as of .
Astelli Reclaimer 
Creature — Angel Warrior · 5/4 · Rare · Edge of Eternities Promos · #4p
Flying
When this creature enters, return target noncreature, nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is the amount of mana spent to cast this creature.
Warp {2}{W}
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
4 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Edge of Eternities | 4 | Rare | $0.49 | $0.49 |
| Edge of Eternities | 288 | Rare | $0.99 | $2.99 |
| Edge of Eternities Promos | 4p | Rare | $0.49 | $0.79 |
| Edge of Eternities Promos | 4s | Rare | — | $0.79 |
5 rulings from Wizards of the Coast
- 25 July 2025If a copy of Astelli Reclaimer is created on the stack, no mana was spent to cast the copy, so X will be 0. The amount of mana spent to cast the original spell is not copied.
- 25 July 2025Astelli Reclaimer’s enters ability cares about the mana you actually paid to cast Astelli Reclaimer, not its mana cost. If you cast Astelli Reclaimer for {3}{W}{W}, X is 5. If you cast it with warp for {2}{W}, X is 3. Any effects that increase or decrease the cost to cast it will also be taken into account.
- 25 July 2025If an effect requires you to pay some amount of mana to prevent Astelli Reclaimer from being countered, as Divert Disaster does, that mana wasn’t spent to cast Astelli Reclaimer and will not be taken into account.
- 25 July 2025If an effect allows you to cast Astelli Reclaimer without paying its mana cost, X will be 0.
- 25 July 2025If a card in your graveyard has {X} in its mana cost, X is 0 for the purpose of determining its mana value.