🧪 The Beta Beat (V43) – Updated Ninja Tower event and new Heroes, new Santa's challange hero and cosutmes, new legendary heroes (event unkown), Season 2 costumes, new S4 heores, new HoTm -- Sharing the Big Picture on What's Going on in Beta

Gameplay Help & Tactics
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Santa’s Challenge hero costumes topic is now available too:

Staff have just clarified that the new legendary heroes will belong to an event. (So they are not Season 5 heroes)