Can Pokemon have 4 types at once?

Question

Let's just say that in a double battle I send out gourgeist knowing trick or treat and Trevenant knowing forest curse. What if they use those moves against one Pokemon, like quagsire for example, will quagsire be a water/ground/ghost/grass type? Or will one of the moves fail?

Answer 1

>If the target already has an additional type added to it by Forest's Curse, that type is replaced with the Ghost type.

[Bulbapedia][1]
>If the target already has an additional type added to it by Trick-or-Treat, that type is replaced with the Grass type.

[Bulbapedia][2]

In conclusion? No a Pokemon cannot have 4 types at once. The maximum will be 3 types. The effects of Forest's Curse and Trick-or-treat will counteract each other, and the one which goes second will override the first one.
[1]: http://bulbapedia.bulbagarden.net/wiki/Trick-or-Treat_(move)
[2]: http://bulbapedia.bulbagarden.net/wiki/Forest's_Curse_(move)

Comments

Thanks semp!