|ディープシーアバランチ, Dīpu Shī Abaranchi|
(Deep Sea Avalanche)
At the start of Deep Avalanche, all enemies on the field are teleported to the bottom of the sea, where Mule swims into view and stops in front of them. Soon it charges up its energy and whips its fins and tail forward, causing a horizontal whirlpool that spins the enemies before teleporting them back to land in a blue energy ball that explodes and leaves them sprawled out over the ground.
- In order to obtain this spell, the Water Egg must be won from Buma's Fishing Hole after obtaining 20,000 fishing points and turned into a Water Talisman at Zalan's shop in Jeremi. Wearing the Talisman will enable the user to cast Deep Avalanche.
- Deep Avalanche is the weakest of the Ra-Seru summon spells unless done to enemies of the Fire element.