Dawnglade Regent

Crown the monarch, then bolt the door behind it. The reward for taking the throne is normally a fragile one: draw a card each turn, but hand the crown to whoever connects in combat, and hope the removal pointed at your board doesn't force a trade first. This 8/8 rewrites that bargain by granting hexproof to your entire board the moment it enters, which means the spells that would otherwise pry the crown loose by killing your creatures or your monarch-holding threats simply stop working. The card advantage is almost the smaller half of the deal; the real effect is that the crown, once claimed, becomes very hard to reclaim by conventional means. What keeps this from being a hard lock is the precise word on the card: hexproof, not shroud, not indestructibility. Board wipes still clear the table, edicts still force sacrifices, and combat still moves the monarchy, which is exactly how the crown is supposed to change hands. The design closes off the dishonest shortcut (pointing a removal spell at the monarch's board) while leaving the honest counterplay intact: swing through the 8/8, wrath it away, or make its controller sacrifice. It is a self-defending draw engine that treats its own enter trigger as most of the win condition, a blunt Elk stapled to a mechanic that had rarely been given this much protection.