it gains 300 ATK for each material currently attached to it, until the end of this turn, and if it does, and also has a material that is owned by your opponent, it can attack directly this turn (even if this card leaves the field)
If youve got the right levels and tuners in your deck, however, Id definitely chuck a copy of Beelzeus in
The 2,000 attack and 1,500 defense make it a decent enough card to play if you're setting up for a stronger monster but need a bit of defense

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