Please be very careful. Let your friends and family know about this potential hazard. I'm not interested particularly in any drug policy response. These kinds of messages get sent over the internet all the time. The formula is less about chemistry and more about enhancing fear.
Strychnine is a poison.
LSD is irrelevant to its toxicity. LSD won't change the ability of strychnine to be absorbed by the skin. LSD won't increase the lethality of strychine. The amount of strychnine needed to hurt you would be visible on phone keys, if the material could stay attached to it. It is bogus as a claim about gang initiation.