Question: what is gx and ex?
Answer: A big feature of Pokémon-GX is the brand-new GX attack mechanic. ... One notable difference between Pokémon-EX and Pokémon-GX is that Pokémon-GX come in three different stages: Basic, Stage 1, or Stage 2. (The vast majority of Pokémon-EX are Basic Pokémon, and Mega Evolution Pokémon-EX come with their own special rules.)