Knowledge Exploitation [Morningtide] Exodus whenever they play an action

whenever they play an action card

Set: Morningtide Type: Enchantment Rarity: Rare Cost: {U}{U} As Declaration of Naught enters the battlefield

Set: World Championship 2004: GBA Promo Card type: Normal Spell Rarity: Prismatic Secret Rare Destroy all of your opponen's Spell and Trap Cards on the field

Set: Ice Age Type: Sorcery Rarity: Rare Cost: {4}{R}{R} Destroy all artifacts

and return it to it's owner's hand

Knowledge Exploitation [Morningtide] Exodus whenever they play an actionSet: Morningtide Type: Tribal Sorcery Rogue Rarity: Rare Cost: {5}{U}{U} Prowl {3}{U} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.) Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles.