The Slash Royale update cut the all star point prices in half from October 18 to 26.

Star Points were added in the December 2018 Update.

However, Cards that the player has collected enough of to upgrade them to the max level, but have not been upgraded to the max level, will not award Star Points.

If you use Trade Tokens to get Star Points instead of letting the Trade Tokens overflow and convert to Gold, this is cheaper than buying Star Points in the Shop (you get 1 Star Point for 1 Gold for non-Legendary Cards, 2 Gold for Legendary Cards).

This means for non-Legendary Cards, the player will get 1 Star Point for 5 Gold, but for Legendary Cards, you get 1 Star Point for 20 Gold. Since the Cards overflown also convert to Gold, half of the Gold spent this way is refunded.

Also, when max-level Cards are bought from the Shop, they are transformed directly into Star Points.

Collecting max-level Cards in any way (from Chests, Quests, trading) will award Star Points as well as Gold (1 for each Common, 10 for each Rare, 100 for each Epic, and 1,000 for each Legendary.) In a King's Level lower than 14, if you gain Experience when donating and upgrading cards, you would gain Star Points for the same amount.

Players can obtain Star Points once they reach King Level 6, Star Points appear in a bar à la the Experience bar on the top right and can be toggled to change between them.

All cards currently have at least one Star Level, with some having two or three. Star Levels do not have any effects on interactions they are purely cosmetic. Cards with more Star Levels have golden particle effects and golden clothing, armor, weapons, or other elements added to their sprites in battle. Cards with one Star Level glow bright gold while being deployed. Star Points can be spent to upgrade level 7, 10, and 13 cards and give them Star Levels but the player must have a level 6 King Tower. Star Points are used to unlock cosmetic changes for Cards.

Clash of clans level 4 barbarian