Teemo shrooms should not be disabled by Oracle Alteration
The oracle alteration should not disable teemo's shrooms. It just destroys teemo's counterplay(e.g irelia, hecarim, jax jumps on you while you are standing in front of a shroom and uses alteration to kill you and shrooms) and you can destroy more than 3 shrooms at once using alteration. How it should work is, Teemo's shrooms can be revealed but not stunned.