Mental Lock

Each player can't cast more than one spell each turn.

Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.

Imprint — When this artifact enters, you may exile an instant card with mana value 2 or less from your hand. , : You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.