So let me explain. A pokemon is either a pure or dual type. 3 would obviously be alot more complicated overall but i think i found a solution to this.

First there still are quite alot of typings we havent seem paired up yet (ex fire/grass ghost/rock elect/dark) but many are already done. Especially for water and flying (all paired up). So another way to add flavor into the mix would be to add triple typing via ability. So mostly mega evolutions would be getting these extra typings.

So the ability would be called "_______ Energy" which will be 18 total (every type). It would basically add 2 things. The pros to typing only, Stab (Same type Attack bonus) and resistance/immunties. That would be the trade off for third typing instead of a real ability. This third type other advantage will not make a pokemon weak to that types typing.

Thoughts? Here are examples so i hopefully can make others understand lol...  It would give pokemon that extra type that makes sense as well. You can guess who they are!

Anywaysss...

Butterfree or Venomoth (Psykic Energy ability)

Bug/Poison - Bug/Poison/Psykic

Instead of having extra 3 weaknesses to dark ghost and bug (in this case bug being neutral) it has an extra resistance to fighting (1/8th damage) and resist psykic with STAB psykic moves!

Lapras (Dragon Energy ability)

Water/Ice - Water/Ice/Dragon

Despite being a dragon its not weak to dragons or fairy attacks and ice will stay double resistant! Add in dragon type resistance to water,fire,elect,grass and now you have lapras withou a weakness to both grass and elect and it has a resistance to fire again and double resistant to water.

How about now? Like thia theory? Is it worth exploring? Come up with your own if you like:)

Ka-pi96 said: Considering dual typing already halves the stab would a 3rd type then cut it even further? Oh and Butterfree should probably get flying type before it gets psychic type

Wut ? Dual Typing halving the STAB ?? Since when ?

STAB was only halved moving from V gen to VI gen for balancing purposes, this is the first time I hear about this and I'm really skeptical towards it... /OT

I think it could work, but only with a handful of types, said abilities related to Fire, Steel, Poison, Ghost and Fairy would be broken AF.

On the other hand many pokémon would love to get the ice one just to get that one ice resistance (I say Ice because it's one of the few that would't be broken if added). Honestly at this point I'd much prefer Game Freak to directly add a third type to certain pokémon and say "the third type is not as dominant as the other two so it gives x, y and z differences from the regular dual typing". In the end we've already seen plenty of Pokémon that should have 3 types, see Gyarados, Blaziken, Flygon, Venomoth etc.

i like.
that open tons of possibility. if you are fighting someone and you dont know if it has he ability or not meaning having the resistance to the move you planing to choose.

is like getting lots of pokemon the vantage of charizard. you dont know if it is a mega Y or mega X in the beggining, and if you should choose thunder punch or earthquake.

but the 8x advantage is really overpowered. maybe they could change to something like the +2 atk(like a sowrd dance) for each type vantage: 2x 1 type vantage, 3x for 2 type vantages and 4x for 3 types vantage.

Ka-pi96 said: Considering dual typing already halves the stab would a 3rd type then cut it even further? Oh and Butterfree should probably get flying type before it gets psychic type

True that lol. But this would give all those pokemon that flying type without taking away their 2nd type no?

This would be extremely broken.

Ka-pi96 said: Considering dual typing already halves the stab would a 3rd type then cut it even further? Oh and Butterfree should probably get flying type before it gets psychic type

x6 super effectiveness... hehe! ;)

I still have problems understanding Flying Press (dual type move)... I'm not into it.

How would it be broken? In fact we already have something similar with this via ability. And it takes away an ability per say

2 different things. It just means for the abilility a pokemon would gain more resistances and have stab toward that typing

Triple resistances and the opportunity for three stab moves of different types on one moveset. Broken.