Gleipnir

The Gleipnir is a consumable item in Trials of Mana HD.

Trials of Mana and Trials of Mana HD
One of four class-change items for Riesz, the Gleipnir is generated by a ??? Seed planted in a Magic Pot, and only if she was promoted to Rune Maiden for Class 2. The item must be in the party's possession to activate the Fenrir Knight class selection in Class 3.

Alternatively, casts Enfeeble on all allies

Etymology
In Norse mythology Gleipnir (from Old Norse "open one") is the binding that holds the mighty wolf Fenrir.