MVPs

All mvps on dungeons and fields have green aura.
MVPs without green aura: Illusion MVPs, Instance MVPs (except ET&EC, Wolvchef's Laboratory)
The MVPs drop Mysterious Combination Bundles, which are for crafting shadow gear. More information here.
The MVPs also drop Orc Warlord Token, White Snake's Tear, Knotted Letter, Rough Shadowdecon, Shadowdecon, Rough Zelunium, Zelunium.
These items are needed to make the recipes.