You can see below Global drop for whole MU continent. There are a lot of interesting items, which you need during the game.
CryWolf
Splinter of Armor
Bless of Guardian
Claw of Beast
Tarkan ~ Ubaid
Lock Magic Bell
Silver Box
Dark Raven Spirit
Loch's Feather
Crest of Monarch
Ubaid ~ Old Kethotum
Condor Magical Drops
Golden Box
Dark Horse Spirit
Aida 3 (Bloody monsters)
2.5 wings materials
Land of Trials
Elemental Rune
Talisman of Luck
Elemental Talisman of Luck
Ancient Items
Acheron ~ Kardamahal Undergroun Temple
Mithril Fragment
Gemstone
Deep Dungeon 2 ~ Kardamahal Undergroun Temple
Garuda Flame
Golden Sentence
Swamp of Darkness ~ Kardamahal Undergroun Temple
Boss Battle Ticket
Nixie Lake ~ Kardamahal Undergroun Temple
Varka Entrance Ticket
Elena Letter
Blaze Kethothum ~ Kardamahal Undergroun Temple
Uriel's Feather
Ability Crystal
Excelent Set Items Drop
Bloodangel items - Debenter, Uruk, Nars
Darkangel items - Ferea, Nixie, Old Kethotum
Holyangel items - DeepDungeon1,2,3,4,5
Awakening items - Swamp of Darkness, Kubera
Blue Eye items - Abyss1, Abbys3, Abyss3
Silverheart items - Scorched Canyon, Icarus Red Smoke
Manticore items - Arenil Temple, Ashen Aida
Briliant items - Blaze Kethotum, Kanturu Underground
Apocalypse items - Ignis Volcano, Bloody Tarkan
Primorial Lightning - Tormenta Island, Twisted Karutan