Meteoric Invocation

Meteoric Invocation is a Multi-Type Artifact created by the Great Kings from the corpse of an unknown Arkin

Appearance
Meteoric Invocation is a mechanical staff is capable of changing shape into any bladed weapon the user so wishes. The actual design of the staff needs to be discussed. I can't think of anything from scratch, but we now it's going to have a piscine motif.

Sacrifice is demanded
When an object is stabbed with Meteoric Invocation, several fish-like entities called will spring forth from the object and fight for the User. We'll call them "Summons" for the sake of clarity.

Different Summons are brought forth depending on what was stabbed, and literally anything and everything can be stabbed (but most objects are grouped together in classes to avoid giving this Artifact a bunch of different abilities). Whether it be an opponent, yourself, a tiny object or even the air itself: Meteoric Invocation can stab it.

The deepness of the stab wound/mark inflicted by Meteoric Invocation determines the strength of the Summon that is brought forth.

That strength can be divided upon several small, weak duplicates of the Summon, or pooled into a singular powerful Summon.

Summons can be controlled individually and precisely at the cost of increased Flow Drainage, or can be placed on "Auto-Pilot" and follow predetermined orders.

Auto-Pilot commands change depending on the summon.

Summons violently explode once a certain time limit is reached. The User can choose to detonate summons early at the cost of additional Flow Drainage. Time limits vary for different Summons.

Not sure
Meteoric Invocation can shroud it's blade with the same arcane energy that Summons are composed of.

List of Targets, their Summons, and their abilities.
Certain "Variables" can be changes at the cost of additional/subtractive Flow Drainage.

Cool things you can do with it
Make a bunch of piranhas and shred someone to pieces. Then make them blow up for even more damage.

Ways to kill people
The Piranhas are Meteoric Invocation's most universal summon that will serve well in most situations. You can also quickly stab yourself to easily summon them, if you can't get near your opponent.

Limitations
Something has to be stabbed for Meteoric Invocation to work. Not much of a limitation though since everything can be stabbed.

The need to make a motion for the Artifact to function might be the difference between victory and death.

Trivia
My best friends came up with this idea. :)