Gate

So what does this spell do?

Currently nothing is the short answer.

This is a very old grandfathered spell from stock MERC, in stock MERC it is mob only and it summons/creates a mob (typically a demon) that would assist the mob that summoned it in fighting the player. Well this how it should work in stock MERC, which avatar is based upon so I assume this is right. -- Redwinter