Pros:
On Crit: Stuns enemy for 5s
Crit Wet Players
Immediatly brings back dead players on hit in MVM
Mirrors 50% of Healing Target's Explosive Jumps
Goes Half the speed of any Faster Healing Target (ex.: Scout: 133% Medic: 107% Medic Healing Scout with this: 120%)

Cons:
-20% damage penalty
No Random Crits
15% slower firing rate
Loses 5% Über on Sucessful Critical Hit
While Equiped: On 100% Über, +10% Crit Vulnerability

Sounds incredibly stacked. Let me try.

Pros:

Alt fire: Refills teammates' clips or 20% of their ammo

Cons:

-30% Damage
Alt fire: takes 10% of your uber away

the Jarate Sniper well be happy when this item was on sell for the medic.

In water or mad milk or jarate: crits
3rd consecutive hit is a two second stun
70% less damage
60% slower holster speed
When crit boosted: all near by teammates get minicrits

Pros:+On alt fire : will be ubered (effect adict on medigun) on 3 second and more movement speed,but pay 25% of ubercharge
Cons:-100% slower firing speed on alt-fire
-70% slower holster speed
No random crits

primary fire causes a arc to come out the front and arc between 8 people doing 25 dmg and stunning for 2 seconds + giving 10%-80% speed boost depending on the amount of enemy's shocked

idea to help the medic escape out of sticky situations