My Questions is: The most abilities says, reroll save rolls. For example: the skink priest gives alle units around rerolls on saves. there are abilites where it is said exactly "reroll failed saves". Does it mean, on rerolls to save you have to say if you wonna reroll the hole save? example: i have 6 saves to do. i get 3 and 3 not. do i get to choose to reroll all six saves and hope i make 4? do i reroll the 3 failed?