Magic The Gathering Cards of types 'Villain' and 'Human'

As this creature enters, secretly note a word with six to eight letters. {1}: Target player who doesn't control this creature guesses the noted word or an unguessed letter in that word. If they guess wrong, put a +1/+1 counter on this creature. Any player may activate this ability. When a player guesses the noted word or all of its letters, sacrifice this creature.

{1}{B/R}: Switch a Killbot or Mary O'Kill in your hand with one on the battlefield. (If a creature is tapped, the switched creature is tapped. The same is true for untapped, attacking, blocking, enchanted, equipped, and targeted. Any counters on a creature are on the switched creature instead.)

At the beginning of combat on your turn, target noncreature artifact you control becomes an 8/8 Robot Villain artifact creature in addition to its other types.

Flying Whenever you discard a nonland card, put a +1/+1 counter on target Goblin you control. Whenever you discard a land card, create a tapped Treasure token.