defensive yugioh deck Complete Custom for Yu-Gi-Oh! VRAINS Rare Attack Double Defender - Yu-Gi-Oh! Card

Spellslinger The next obvious home for Cantrips are in the popular Spellslinger archetype in Commander where you have things that trigger when you cast an instant, sorcery and sometimes just for noncreature casts

Once per turn, when your opponent activates a Spell/Trap Card or effect (Quick Effect): You can reduce this card's Level by 2, and if you do, negate the activation, and if you do that, destroy that card

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While most Aura cards are generally used to buff your own creatures, there are auras you want to attach to opposing ones

Sidisi has proven herself so far in testing and I wouldnt be surprised if she was a cornerstone of the format