The latest batch of new Pokémon TCG Pocket cards finally has a concrete release date, but it seems like you won’t be able to trade them right off the bat.

The Pokémon Company announced today that Space-Time Smackdown, Pokémon TCG Pocket’s latest expansion, is set to debut at the end of the month right after the game’s trading feature launches on January 29th. While cards from the last set could all be obtained from a single type of pack, Space-Time Smackdown — which includes a number of monsters from Pokémon Diamond / Pearl / Platinum — will come from packs featuring the legendary Pokémon Dialga and Palkia.

Along with Space-Time Smackdown’s announcement, TCPi also revealed a bit more about how the trading mechanic will involve two new types of in-game currencies — trade houseglasses and trade tokens. It seems as if there will be cooldown periods as well as a cost if you want to swap cards from Pocket’s Genetic Apex and Mythical Island sets with other players. But there will definitely be some waiting involved for people hoping to trade Space-Time Smackdown, which will not be tradeable until a later date after it drops on January 30th.