Varar, Vaalmonican Concord (INFO-EN049) [The Infinite Forbidden]

2 monsters, including a "Vaalmonica" Link Monster Unaffected by card effects, except "Vaalmonica" cards, while you have 6 or more Resonance Counters on your field. Gains 1 additional attack during each Battle Phase, for each Level 4 "Vaalmonica" monster you control. Once per turn, when your opponent would Special Summon a monster(s), if you have 3+ Resonance Counters on your field (Quick Effect): You can negate the Special Summon, and if you do, destroy that monster(s), then remove 3 Resonance Counters from your field.