From WoWWiki

Phase Wyrms are level 70-71 mana wyrms located at the Bash'ir Landing of Blade's Edge Mountains. They are out of phase with the normal world and are only visible to players who have used a [Bash'ir Phasing Device] while on the quest  [70 Daily] Intercepting the Mana Cells† or  [70 Daily] Maintaining the Sunwell Portal.

Drops

Phase Wyrm drops the following notable loot:

Elemental Fragment		Mote of Mana Use: Turn ten Motes of Mana into Primal Mana. 1 Charges
250250 Apexis Shard Binds when picked up "A slivered fragment of an Apexis Crystal."		2020 Depleted Crystal Focus Use: Combine with 10 Apexis Shards to create a Charged Crystal Focus. The charged crystal can be used for instant healing and is rumored to have other uses. Kronk in Ogri'la can likely tell you about this. 1 Charges

Patches and hotfixes

Patch 2.4.0 (3/25/08): Added

External links