Can anyone explain what the evolution slot is? : rClashRoyale

Can anyone explain what the evolution slot is? : rClashRoyale clash royale first slot May be an image of text that says 'BATTLEROYALE CHИΜA CASINO vs LUCKYLAND SLOTS ROUND Kick off the first round of celebrations with our 30% off from 10 clash slot Royale Fruity Candy Lucky Clover Lady Fortune Rabbit Super Golf Clash of the Giants Royal Katt Royale Vegas Brothers Kingdom

clash slot Royale House Clash of the Giants Royal Katt Royale Vegas Brothers Kingdom Brothers Kingdom 2 Poker Ways Dragon Wish 888 Gold Panther Maxways Wild Wet Win

clash royale first slot Card Evolution and the first Evolution Slot are both unlocked at King Level 7 The second Evolution Slot is unlocked at King Level 54  00:00 Shards - ; 00:13 Where To get Shards - ; 00:20 First Slot Evolution - ; 00:24 Cycle