One of the Dalmatian cards, Lucky - the 15th Puppy, is a great card that adds extra cards to the player's hand if luck is on their side
It helps sell an illusion of physical media even where none really exists
Ok Summon: Shiva [Borderless] #362 (Magic Final Fantasy) Details All prices are the current market price
Ok Lightning, Security Sergeant [Extended Art Foil] #462 (Magic Final Fantasy) Details Full Price Guide: Lightning, Security Sergeant [Extended Art Foil] #462 (Magic Final Fantasy) All prices are the current market price
Sometimes this is done during the upkeep, or in response to card draw, in case your opponent draws a split second card (say, Krosan Grip for your Icy Manipulator), countermagic, or an untargetability effect, but in general it's best to wait until the last moment