fix for Issue 672: A deck is invalid if it contains the reverse side of a double-faced or flip card.
remove duplicate full stops from Oracle text
revert change to Fling, but is in MagicSacrificePermanentsEvent
change MagicSacrificePermanentsEvent to sacrifice one permanent, then add first n - 1 other events
repalce Magic*PermamentsEvent with MagicRepeatedPermanentsEvent
add note to Cascade
merge fix from lodici