Setra the imperishable mother

The imperishable mother : At the begining of each turn create twice X 10/10 Skeleton tokens with whenever this creature attacks destroy 2 targets permanent for each opponent expect commander your opponents cannot have shroud or indestructible or shield counter while you are attacking
except commander x can't be greater than 10 and skeletons you control have death touch indestructible shroud hexproof and 20 shield counters on them and if damage would be dealt to a skeleton you control prevent it