Now that Shenindja can have mimic and with the new move Burn, I wondered if there was a way too improve this.
The ''old'' typeless strategy:
Audino and Shenindja are send into the field. Audino uses entrainment on an opponent and Sheninja uses mimic on Audino. Shenindja now knows entrainment. Then Audino switches out and Arcanine/Typhlosion comes in. Shenindja uses entrainment on Arcanine/Typhlosion (so I don't have to type too much I'll continue with just typing Arcanine but I mean both/either your choice) Now Arcanine has Wonder guard and uses Burn Up and becomes typeless, continues the sweep from there.
The ''new'' typeless strategy:
Octillery and Sheninja are send into the field. Octillery uses entrainment on an opponent and Sheninja uses mimic on Octillery, Shenindja now knows entrainment, while Octillery uses soak on Sheninja. Now you have 2 typeless Pokemon that can give Wonder Guard to a Pokemon regardless of whom's getting knocked/phased out.
Sheninja switches out and Arcanine switches in. Octillery uses entrainment on Arcanine. Now Arcanine has Wonder guard and uses Burn Up and becomes typeless and Octillery uses mimic to learn Burn Up, uses it and also becomes typeless, the typeless duo continues the sweep from there. You can also have a Ditto or Smeargle on standby to transform into 1 of the typeless guys.
In addition if the Sheninja gets switched in again it can now learn Burn Up and becomes typeless.
I would gives Octillery something like seed bomb or an other grass move, because he turns you into water with soak and I think it synergizes well with fire from burn up, yo could of course also use some electric type moves and make sure Arcanine has some nice coverage as well.
Let me know what you think and how this could be improved.