[Pendulum Effect]
If you have no cards in your other Pendulum Zone: You can destroy this card, and if you do, add 1 Level 7 or lower "Mythical Beast" Effect Monster from your Deck to your hand. You can only use this effect of "Mythical Beast Master Cerberus" once per turn.
[Monster Effect]
Each time a Spell Card is activated, place 2 Spell Counters on this card when that Spell Card resolves. If there are 4 or more Spell Counters on your field, this card cannot destroyed by card effects. Once per turn: You can remove 4 Spell Counters from your field, then target 1 monster your opponent controls; banish it, and if you do, this card gains ATK equal to the original ATK of the banished monster until the end of your opponent's turn.