Great battle. That is what I built this Magmortar to do. I was waiting to revenge Venusaur with him. His item is wide lens.
Your elemental core of Moltres/Milotic/Venusaur is predictable and overused, they're a known quantity and I'm used to dealing with them. Probopass and Magmortar however regularly catch people off guard and are still very effective.
I had more trouble with Claydol than anything.