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The Ripper. Damage 10-10 (?) starting speed 2-3 Damage to - ALL - Range 2 Bloodthirst! - Upon critting The ripper gains 1% damage/crit damage permanently Killing Spree - Each Kill the ripper goes into a murderous spree Gaining 5-10% attack speed permanently , and additional 200% for 2 seconds. (does not stack)

As well for combining potions, with how rare potions are (atleast for me) i think it should only require 2 potions per transmute, or make transmuted potions stronger if they take 4. (ripper is purple tower , cost roughly 4k?)