There’s a large variation of different item bundles available on the in-game shop. In order to optimise the gaming experience for everyone, we’ve personalised the bundles for each account. You can find the current active bundles from the main lobby frame:
The bundles are diverted into 3 main categories: Seasonal Bundles: These can be either calendar Seasonal items (such as Halloween, Christmas, Valentine’s Day etc.) or tied to the current in-game ladder Season (for example Season 4). These Bundles are available from a few days to a couple of weeks, depending on the length of the Season and the interval between game updates. 
Battler’s Deals: These special bundles include in-game items you’re still missing, as well as a pilae of Gems. and usually last for 48h.
Flash Sales: These mega bundles appear only extremely rarely, so if you’ve got one, it’s better to seize the moment! They include in-game items you’re still missing, as well as a big pile of Gems.. The Flash Sales only last for 5 minutes and are personalised, which means that each Battler will see their own Flash Sale.You’ve got a Flash Sale? Great! You better buy it before it disappears!If you haven’t seen Flash Sales yet, please don’t worry – a little bit of patience goes a long way! Just keep playing and they’ll appear in time.You’ve got a Flash Sale that you liked, but didn’t buy it? There’s not much we can do about this, as we do not add Flash Sales to players’ accounts. Hopefully you’ll get lucky again soon!Will the Shop items from previous seasons be available for purchase in new Season?Yes. The items from the previous Seasons will still be available on the Shop throughout the latest Season.