Every Season one card will be boosted!
The Boosted Card will be leveled up to your King Level for the duration of the Season. When the Season ends the card will return to its normal level.
As an example, if your King Level is 11 and your card level (for the card that will be boosted) is 9, the card will be boosted to level 11. Once the Season ends the card will return to level 9.
This feature will be available to all players from King Level 7 and up.