With 2 Lysandre/4 Seeker and 4 lasers you should be able to either switch out their active and KO another, or try to sleep their attacker which will make them miss the attack that blocks basics, allowing you to KO it. I'm not sure that Jolteon EX (The only one I know of with the attack to block basics) is very popular in expanded, at least I haven't seen it in the little I've played online. (I focus on standard mostly, I'm just getting into expanded online and all the live events I've attended have been standard)
If it does become a problem then you can either drop other Pokémon to buff up the Eevee line, or throw in a 1-of Pokémon Ranger to clear the effect. Escape rope + Lysandre works to, but that's a two card combo.
If it does become a problem then you can either drop other Pokémon to buff up the Eevee line, or throw in a 1-of Pokémon Ranger to clear the effect. Escape rope + Lysandre works to, but that's a two card combo.