Alright I've done Crown of the Sunken King and Crown of the Old Iron King. Now I've completed the Crown of the Ivory King. Let me tell you. It's a bit harder then the other 2. It takes place in a snowy winter kingdom wonderland. It's desolate and the enemies are all snow and ice themed. To which I like. Their are female enemies that can either stab you in the back or can cut through your shield and damage you, regular minions that can cast a weak soul spear, some of those minions have shells on their back so they can't be backstabbed and their poise is high. Plus their are icy statue golems that tried to kill you when active, along with rampart golems that can fire it's lance, send a icy strike, and can drink estus. Then their the bosses. Aava the King's Pet is tough and can hit like a truck plus the gimmick is that if you don't have a specific item he'll be invisible. But he's awesome cause well...it's a effing blue saber-tooth tiger! Then theres the optional boss known as Zallen and Lud the other 2 of the King's Pet. You think one tiger was tough how about fighting 2 black saber-tooth tigers with one of them powering up at half health that lets his attack power increase and capable of healing himself for a short time. Then finally the final boss. One of my favorites the Burnt Ivory King and nope it's not Aldia. He's a badass to which if you try to fight him without finding those Loyce Knight allies your in for a world of hurt as he's fast, can buff up his sword to make it huge and long distant sword, capable of summoning ice pillars, and able to come at you from a far away distance. Plus the music is awesome!. The new spells are nice my favorite being Splintering Lightning Spear and the new armor and weapons are also cool. Plus I think it's the only time a Child of the Dark was a ally. She never once tries to harm you she tells you to go back to run away from the Chaos. Anyways the old thing I consider a bit annoying and bad is the optional area the Frigid Outskirts. Boy your gonna be in for alot of trouble cause it takes place within a raging snowstorm and when it starts to storm frozen horses appear and try to kill you. Be warned as if the snowstorm stops and goes again and you don't kill it. Another one shows up and then another it's a death race with these horses. Also the only way to get to where the optional bosses are is that you have to locate other buildings so that you know where your going and finally after the 3rd safe zone building you just head straight into a chasm from there you'll have to move on and there it where the optional bosses are. So it's really annoying to backtrack all the way there if you die. So yeah great DLC but the optional dungeon will leave you to think this is the bane of your Dark Souls 2 experience. But it's optional so don't worry.
Also if your wondering what you get for completing all 3 of the DLCs and getting the crowns. Well depending on the crown your wearing wheather it be King's Crown, Crown of the Sunken King, Crown of the Old Iron King, or Crown of the Ivory King. If you speak to Vendrick you earn his blessing. Thus prevents you from being cursed or hollowed if you wear the specific crown your wearing. So I say I hope there is more DLC to Dark Souls 2 or this is the final review. I say these 3 DLCs are awesome and their worth buying. To some who hate the DLCs. I say mind your own opinions if you start hating.