Fennah, Temporal Blade

{2}{w}{u}, {t}: Exile four permanents you control
then take an extra turn after this one.
Whenever Fennah attacks, you may prevent all
combat damage dealt until end of turn. If you
do, create an Injury enchantment token with "At
the beginning of your upkeep, exile target
permanent an opponent controls at random."
"Chronomancy is less precise than most would believe
but still just as powerful."