User blog comment:Turbo Wings Nemethgear/Brave Frontier EU-The Zodiac/@comment-28009455-20160709074144

Actually, a mana shield (Herald of Yggdrasil & Aquarius of Weeping) is also a pretty ridiculous buff. It's kind of like Tridon's Shield, but then based solely on one's Rec, which means the HP of your Unit's shield is 75% of its current Rec stat. You can easily get a 8000-9000 HP shield if your Units have enough Rec (remember that there is also the 130% boost from HoY's SBB, which is 110% in AoW's case).