SealAll

 is a 6th-level Black Element in.

Description
SealAll actually works by inflicting all allies and enemies with every Anti-color status. This means it will fail against bosses and can still fail against regular enemies while still sealing up the party's elements, making it a very dubious choice. Conversely, it also means players can cheat against bosses that use SealAll by equipping accessories that render themselves immune to the Anti- status of the color they wish to keep using.