There are two different ways to do this
Yet, in terms of Ex cards, it's very lacking and it currently features the following: Shuckle Ex Kingdra Ex Lanturn Ex Espeon Ex Lugia Ex Of these, Lugia Ex is not great in Pokemon TCG Pocke t due to its requirement of three different Energy types, and Espeon Ex can see play in an Eeveelution-themed deck with Sylveon and Sylveon Ex
The enters-the-battlefield ability is also great at helping filter away lands in the late-game to mitigate flood, and can also allow you to cycle away cards that are poor in the matchup in Game 1s, like Thalia, Guardian of Thraben in the mirror match or Reflector Mages against other control decks
Instead, were more likely destined for a second spike or a sudden slump
Untimely Malfunction marries removal, anti-removal, stack interaction, and blocker removal, all for the same cost as Abrade