Shiva, Empress of Ice

{t}: Shiva, Empress of Ice deals 1 damage to target player and all creatures that player controls. Tap each creature dealt damage this
way. Those creatures don't untap during their controller's next untap step.
At the beginning of your end step, if you controlled Shiva during your last turn, put it
on top of its owner's library, then that player shuffles his or her library.