A berserking potion that doubles strength and speed but strips memory and control — Mordecai forbids it after it once killed half a party.
The Potion of Bloodlust is a berserking potion Carl receives (two of them) from his silver Pacifist's Box. For (Constitution) seconds it grants double strength and double movement speed — with every kill adding another 25% speed — but halves dexterity and constitution and inflicts the 'Where the Fuck Am I? Who the Fuck Are You?' debuff, erasing awareness of where or why one is fighting.
Mordecai reacts with rare alarm, forbidding its use because the last person he saw drink one 'accidentally killed half of their party.' Carl agrees it's too dangerous to lose control, but pockets both to research in the Dungeon Anarchist's Cookbook for a way to make the berserker rage useful — a classic loaded gun set on the shelf.
A potion vial; its effects likened to 'giving yourself a PCP enema after riding the Night Train Express.'
A dangerous double-edged berserker consumable Carl holds in reserve.