Which Elite Mercedes Blessing mastery book should I get? Sooo, I got to level 70 on my Mercedes, and I have an option to choose from: Ishtar's Ring 30 Lightning Edge 30 Ancient Warding 30 Dual Bowguns Expert 30 Advanced Final Attack 30 I'm not really sure about which one to choose so it'd be awesome if I had some advice. :D EDIT: I was thinking Ancient Warding (Level 30: Active Effects: MP Cost: 80, Duration: 210 seconds, Damage: +30%, HP: +1500. Passive Effects: Ignis Roar’s avoidance probability +20%) or Dual Bowgun Expert (Level 30: Mastery: +70%, Weapon ATT: +30, Minimum Critical Damage: +15%). Source: [url=http://www.basilmarket.com/MapleStory-Guide-MercedesQueen-of-the-elves-417.html#fourthskills]MapleStory Guide: Mercedes - Queen o