Give Yourself a Boost!
From King Tower Level 7 and above, four cards will be temporarily boosted! View the Boosted Cards from the Collection tab.
Boosted Cards
Boosted Cards will be leveled up to your King Tower Level for the duration of the season. When the season ends, the cards will return to their normal level, and new cards will be boosted instead.
For example, if your King Tower Level is 11 and a card that is boosted this season is currently level 9, it will be boosted to level 11. When the season ends, the card will return to level 9.
Cards Boost Potion
Use the Card Boost Potion Magic Item to boost a card of your choosing to your King Tower Level for 3 hours.