While i've playing in ranked , i've encountered this problem : I had a double istance of wish, i try to use reckless bushwacker to give haste and power-up my creatures (mostly goblins made with empty the warrens) but i werent able to cast it because it says me to choose 1 wish istance but i couldnt click it. I had to waste 1 wish istance for something else and after using it to cast the bushwacker with the only istance left. Check the game log.