The "Calamity Combination" potion is a combination of various potions from the Calamity Mod. These potions include: Yharim's Stimulants, Fabsol's Vodka, Cadence, Titan Scale, Soaring, Bounding.
This potion can only be made at an alchemy table. It is made with 1 Yharim's Stimulants, 1 Fabsol's Vodka, 1 Cadence Potion, 1 Titan Scale Potion, 1 Soaring Potion, and 1 Bounding Potion.
Be aware that this combination is only avaiable if you have the Calamity Mod installed or taken from the TModloader Mod Browser.