If you control a "Cubic" monster: Activate this card by targeting any number of monsters that are in your opponent's Graveyard because they were destroyed and sent there this turn; Special Summon them to your opponent's field, but each becomes ATK 0 and has 1 Cubic Counter placed on it. (Monsters with a Cubic Counter cannot attack, also negate their effects.) While your opponent controls any of the monsters Summoned by this effect, negate any monster effects your opponent activates. When the last of these monsters leaves the field, destroy this card.
You need Cubic monsters on the field to activate Cubic Mandala. Currently Duza, the Meteor Cubic Vessel is the only Cubic monsters.
An archetype that can take advantage of your opponent having 0-attack monsters. Reptilianne Vaskii can be summoned by tributing 2 0-attack monsters. Reptilianne Hydra destroys your opponent’s 0 attack monsters and gives you draw power.