Beelzeus of the Diabolic Dragons [YF08-EN001] Ultra Rare Psychic[+20] while a monster is equipped

while a monster is equipped to it by this effect

Set: EX: Dragon Frontiers Type: Psychic Rarity: Holo Rare

Fusion Material Monsters that are listed on a Fusion Monster Card that includes 'Elemental Hero' in its card name

Set: EX: Dragon Frontiers Type: Metal Rarity: Rare Retreat cost: Colorless

Set: McDonald's Promos: 2014 Collection Type: Darkness Rarity: Promo Retreat cost: Colorless

Beelzeus of the Diabolic Dragons [YF08-EN001] Ultra Rare Psychic[+20] while a monster is equippedSet: 5D's Manga Promotional Cards Card type: Synchro Effect Monster Rarity: Ultra Rare Attack: 4000 Defense: 4000 1 DARK Tuner + 2 or more non Tuner monsters Cannot be destroyed by battle or card effects. Other monsters you control cannot attack. Once per turn: You can target 1 monster your opponent controls; any battle damage your opponent takes from attacks involving this card this turn is halved, also, change that monster's ATK to 0, and if you do,