There aren't any clear answers for dealing with the Pokémon TCG Pocket Cresselia ex Drop event, thanks in part to the limited capabilities of Darkness-type cards, but we do have a few options. In this ...

Pokemon TCG Pocket's new event offers players the chance to collect promo cards like Cresselia ex. Promo cards may have different abilities and HP compared to regular cards, enhancing gameplay.

All other cards that can be obtained other than Cresselia ex in the Promo Pack A Series Vol. 4 (Image via The Pokemon Company) ...

Pokémon TCG Pocket Cresselia ex event ... and not the full art variant. Scolipede acts as somewhat of a pseudo-ex card in this deck, taking advantage of Weezing's Poison to deal 120 base damage ...