I wish I could stretch like Mr fantastic
Granted. The physical properties of natural rubber are now yours. Excellent tensile strength, elongation, and abrasion resistance and high compression set are your strengths. But of course, there are drawbacks. Resins like rubber are polymers, which have a thing called 'glass transition temperature' i.e. the temperature below at which the polymer becomes brittle, turning into, well… glass. As such, the biggest threat to you are people who can manipulate ice.
Unknown to you, your next-door neighbour is one such individual, and s/he is a
psychopath. S/he can freeze things to atomic levels and make them fragile – your Achilles heel given human form. His/her favourite pastime is torture, and dozens of innocent cats and dogs have already been subjected to slow, excruciating deaths. Despite keeping your powers a secret from most, s/he has somehow managed to find out about your 'gift'. As you seem like the perfect guinea pig to test his/her powers on, s/he has become obsessed with you, and can't wait to make you his/her new toy. When s/he arrives at your doorstep it will be a fight to the death...
(Dang, brilliant corruption as usual.)
Thanks

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I wish I could psychically transfer heat to and from things, both to chill them to sub zero temperatures and to heat them up to the extreme.