Kefnet the Mindful (Invocation) [Amonkhet Invocations] SM137 Morph {R}{R} (You may cast

Morph {R}{R} (You may cast this card face down as a 2/2 creature for {3}

Set: Mirrodin Type: Creature — Human Wizard Rarity: Rare Cost: {1}{U}{U} At the beginning of each opponent's upkeep

or another monster's effect

Set: Elemental Energy Card type: Fusion/Effect Monster Rarity: Ultimate Rare Attack: 2500 Defense: 2000 "Elemental Hero Flame Wingman" + "Elemental Hero Sparkman" This monster cannot be Special Summoned except by Fusion Summon

if your Spellcaster monster battles an opponent's monster (Quick Effect): You can reveal any number of Spells with different names in your hand

Kefnet the Mindful (Invocation) [Amonkhet Invocations] SM137 Morph {R}{R} (You may castSet: Amonkhet Invocations Type: Legendary Creature God Rarity: Mythic Cost: {2}{U} Flying, indestructible Kefnet the Mindful can't attack or block unless you have seven or more cards in hand. {3}{U}: Draw a card, then you may return a land you control to its owner's hand.