This idea occurred to me a while ago, from the title it's based on drugs, but that's obvious.

Crystal Meth, Marijuana , Heroin, Cocaine, Cannabis, Tobacco, Morphine, Alcohol, Ecstasy, Caffeine, LSD, Magic Mushrooms,

Based around having huge advantage on the turn they were summoned (high level special summons) and opponent pays a cost of life points, but at the end of # number of turns, it gets banished and you take double that damage, or cards sent from deck to the graveyard. Or just either this archetype can do major damage to your opponent/effects, or increase your life points or draw, followed by the double costing effect.

Mainly high levels, moderate attack/defence or higher, dark attribute, mainly fiends and maybe machines (for production)

(Wouldn't mind help if any of you have suggestions for cards.)