open pokemon cards Pokémon TCG Pocket is coming in October to iOS — Pokémon card packs and battle on iPhone There are 100 types of randomized 60 PokeTCG Sim - Open Card

This is acceptable filler but you don't really want it ever

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But I think Collector boosters are a huge money pit, and you are unlikely to get out of them what you spend on them

Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents of their choice.) When Kozilek is put into a graveyard from anywhere, its owner shuffles their graveyard into their library

Trainer cards might let you search your deck for more Energy cards or play an evolved Pokmon immediately, or offer other interesting perks