Mind on Air [DR3-EN027] Rare 102a You can send "Umi" you

You can send "Umi" you control to the Graveyard to send all cards in both players' hands and on the field to the Graveyard

You can only use each of these effects of "Nekroz of Valkyrus" once per turn

Set: Mythic Edition Type: Legendary Planeswalker — Tamiyo Mythic Cost: {3}{U}{U} +1: Tap target permanent

Once per turn: You can toss a coin 3 times and destroy as many monsters on the field as possible

And still you will not have suffered enough

Mind on Air [DR3-EN027] Rare 102a You can send "Umi" youSet: Dark Revelation Volume 3 Card type: Effect Monster Rarity: Rare Attack: 1000 Defense: 1600 Your opponent must play with their hand revealed.