Bull Demon King

The Bull Demon King is a Minotaur-like creature with 6 variations — 5 elemental, 1 neutral — each with its own boss raid consisting of 10 stages of increasing difficulty and rarity of loot drops.
The Bull Demon King boss raids are unlocked after clearing Board 2 of the Story campaign on Normal difficulty.
Schedule
Sun 	Mon 	Tue 	Wed 	Thu 	Fri 	Sat
Light 	Dark 	Fire 	Water 	Nature 	- 	-
Golden (neutral element)	Golden (neutral element)	Golden (neutral element)	Golden (neutral element)	Golden (neutral element)	Golden (neutral element)	Golden (neutral element)
==Loot==
Elixirs, required for ascending champions, are dropped by the Bull Demon Kings. The Golden Bull Demon King drops neutral Spirit Elixirs, while the elemental Bull Demon Kings drop elixirs of their respective elements.
Golden Bull Demon King	
*Minor Spirit Elixir
*Medium Spirit Elixir
*Mighty Spirit Elixir
*Common Discs
*Rare Shards
Fire Bull Demon King 	
*Minor Fire Elixir
*Medium Fire Elixir
*Mighty Fire Elixir
*Common Discs
*Rare Shards
*Fire Dragon Guard Champion Shards
Water Bull Demon King 	
*Minor Water Elixir
*Medium Water Elixir
*Mighty Water Elixir
*Common Discs
*Rare Shards
*Water Basilisk Champion Shards
Nature Bull Demon King	
*Minor Nature Elixir
*Medium Nature Elixir
*Mighty Nature Elixir
*Common Discs
*Rare Shards
*Nature Valkyrie Champion Shards
Light Bull Demon King 	
*Minor Light Elixir
*Medium Light Elixir
*Mighty Light Elixir
*Common Discs
*Rare Shards
*Light Boon Sister Champion Shards
Dark Bull Demon King 	
*Minor Dark Elixir
*Medium Dark Elixir
*Mighty Dark Elixir
*Common Discs
*Rare Shards
*Dark Dryad Champion Shards
==Abilities==
Golden Bull Demon King	Element neutral
Fire Bull Demon King 	Increases damage and ATK SPEED as he takes damage
Water Bull Demon King 	Has high MAX HP
Nature Bull Demon King	His crystals heal him and grant temporary INVULNERABILITY
Light Bull Demon King 	Has high base DEF, his crystals apply RAISE DEF
Dark Bull Demon King 	His crystals inflict ONGOING DMG