Nehamar, Once so Human

Lifelink, First Strike, Teleport (Whenever this creature would die, you may pay three life. If
you do, you may put it into The Realm.)

Patron-Prevent all damage that would be dealt to attacking or blocking creatures you control.

Sword Forged with Curses-Whenever Nehamar destroys target creature during combat, you may return a creature from The Realm to the battlefield under your control.