Complex sentence: In their true form the Poisons are small, with crystalline body and physically frail, however they are capable of assimilating symbiotes and their hosts and appears to have some kind of telepathy and shapeshifting abilities that allows them to disguise themselves as a target's loved ones.
Split into simpler sentences: In their true form the Poisons are small, with crystalline body and physically frail, with shapeshifting abilities that allows them to disguise themselves. They also appears to have some kind of telepathy which allows them to disguise themselves as a target's loved ones.