Durant get both entrainment and baton pass and read that Gastro acid suppresses an ability (not remove it completely) so can you still use entrainment to screw over your opponent? The other great thing is that the effect of Gastro Acid can be Baton Passed so you can now transition from Durant into Slaking/Archeops/Regigigas without their ability hindering them and sweep from there.
It would work. Durant's Truant can and has been used this way before.