LAST ATTEMPT

[viscid gorge]

A combination of Ullapool's Caber and Escape Plan for Soldier. Lower your health faster you go and bigger the explosion damage. Including yourself of course.

[buoyant vessel]

I like it

make it a cartoon bomb that demoman holds by its fuse and swings like a flail

[stray rapids]

nuke on a stick

[buoyant vessel]

Take a bit from the Shahanshah and make it do less damage when over 50% health

when under 50% make it explode

How about this

When weapon is active:
+25% increased melee range
Causes an explosion when health <50% of max
-25% damage penalty
-90% less healing from Medic sources

[viscid gorge]

-90% percent seems like a very big downside but I think you got that I got the idea from the old Equalizer. Maybe like 50 or 60 percent would be more prefferable. Explosion wise I thought it would explode scaling by how much health you were missing.