From Bulbapedia, the community-driven Pokémon encyclopedia.
Dream World art
The Sacred Ash (Japanese: せいなるはい Sacred Ash) is a healing item found in most games since Generation II. Unlike other items in general, which work on only one Pokémon, the Sacred Ash, when used, is used on multiple Pokémon at a time. It is very rare, and can only be used once, making it a very popular item for cloning glitches or obtaining it by other illegitimate methods.
The Sacred Ash heals and restores all Pokémon in the party, as long as one Pokémon has fainted.
Generation III onwards:
The Sacred Ash heals and restores only Pokémon who have fainted.
The Sacred Ash is typically found only once per game, and will often have some relation to Ho-Oh.
In Pokémon Gold, Silver, and Crystal, the wild Ho-Oh that appears at the Tin Tower will be holding a Sacred Ash, as will any other Ho-Oh encountered in the wild through hacking.
In Pokémon FireRed, LeafGreen, and Emerald, the Sacred Ash is found on Navel Rock, if the player uses the Itemfinder after capturing or defeating Ho-Oh.
Sacred Ashes can be found on the floor in Poké Balls in the Battle Pyramid; however, they cannot be kept.
By defeating Battle CD 46, the player can earn another Sacred Ash as a prize in Pokémon XD.
In Pokémon Diamond, Pearl, and Platinum, players can obtain it by having a Pokémon hold it in Generation III and sending it through Pal Park. Wild Ho-Oh, which can only be encountered with a cheating device, will always be holding this item.
In Pokémon HeartGold and SoulSilver, there are up to two Sacred Ashes in the game. The first is obtained by talking to the Professor's aide in the right gate on Route 2, while the second is held by the Ho-Oh at the top of the Bell Tower, just as it was in Generation II.
Currently, the only way to obtain Sacred Ash in Generation V is by transferring it from Pokémon Dream Radar to Pokémon Black 2 and White 2.
- Since the Sacred Ash cannot be used in battle (unlike the Max Revive), its net effect can be achieved by applying 5 Revives followed by 5 Max Potions/Full Restores, placing its value at 20000/22500, respectively, in terms of utility alone.