Reovlin, Opia Inducer

When Reovlin, Opia Inducer enters the battlefield, it's controller loses half their total life.
Whenever Reovlin, Opia Inducer attacks, choose one-
•Create three token copies of a target creature an opponent controls.
•Create three token copies of a target artifact an opponent controls.
•Create three token copies of a target enchantment an opponent controls.
When Reovlin, Opia Inducer dies, exile all nonland permanents you control.