Dusk // Dawn [Amonkhet Prerelease Promos] Planechase 2012 then discards three cards

then discards three cards

but they're easy to catch

Set: Mercadian Masques Type: Instant Rarity: Rare Cost: {3}{W} You may exile a white card from your hand rather than pay this spell's mana cost

Set: Commander's Arsenal Type: Legendary Creature — Elemental Rarity: Mythic Cost: {5}{G}{U}{R} Creatures you control have haste

−8: You get an emblem with "Whenever an opponent casts their first spell each turn

Dusk // Dawn [Amonkhet Prerelease Promos] Planechase 2012 then discards three cardsSet: Amonkhet Prerelease Promos Type: Sorcery Sorcery Rarity: Rare Cost: {2}{W}{W} {3}{W}{W} Destroy all creatures with power 3 or greater. Reverse Type: Sorcery Aftermath (Cast this spell only from your graveyard. Then exile it.) Return all creature cards with power 2 or less from your graveyard to your hand.