Fourth Evolution! (3)

[Host is now able to customize host's venom to create venoms that have different symptoms for the recipient.]

'Different symptoms? You mean that I can make different types of venoms that have different effects according to my preferences?'

[Yes. With the venom option glands, the host will be able to create venoms using the basic venom components from the wandering spider and the Boa Dendroaspis. Neurotoxin will be able to damage and impair the nervous system, cardiotoxins affect the recipient's heart making it beat faster or slower, and fasciculins could weaken and incapacitate muscles.] 

[The venom option glands will enable the host to customize the contents, composition, and dose of the excreted venoms, creating different reactions to the recipient's body. And with the spider's venom glands having already gone past the +3 upgrade, the potency of the venom that the gland produced will increase exponentially.] The system explained.