Oath of Ruga

When Oath of Ruga enters the battlefield, return target creature card with converted mana cost 4 or less from your graveyard to the battlefield.
Whenever you activate the loyalty ability of a planeswalker you control, tap target creature an opponent controls.
"I will not hide my disdain for most of you, but I shall keep watch, to prevent the nightmares I have witnessed from being repeated."