Mu Online. Creating Devil Square Invitation

Items required
1 Jewel of Chaos
1 Devil Eye (must be on same level with Devil Key)
1 Devil Key (must be on same level with Devil Eye)

Optional items
none.

Percentage Rate
Varies, Higher item levels means lower percentage rate.

Zen Rate
Varies, Higher item levels means higher zen rate.

Result
Failure:
All Items are gone.

Success:
Devil Square invitation at the level of the items.