Raskul Kayn, Ruthless Regent

When Raskul Kayn, Ruthless Regent enters the battlefield, you mill 6 and become the monarch.
If you're the monarch, Raskul Kayn has defender
and indestructible. If not, he has rampage 6.
At the beginning of combat on your turn, if you
are the monarch, put target creature card in a graveyard onto the battlefield under your control
and goad it. It gains haste. Exile it at the end
of combat. If not, each opponent mills 6.