Shield Handler (MP19-EN125) - 2019 Gold Sarcophagus Tin Mega Pack 1st Edition

When a card or effect is activated that would destroy a monster on the field (except during the Damage Step): Target 1 Link Monster on each field; negate the effects of your opponent's targeted monster, and if you do, equip this card to your targeted monster. The equipped monster cannot be destroyed by card effects.