This version of Scrooge (which can be played to the table alongside the other at the same time) lets you play an item card for free each time it banishes an opponents card

3 Chaos, the Endless Cid, Timeless Artificer Cloud of Darkness Diamond Weapon Exdeath, Void Warlock Fang, Fearless l'Cie Freya Crescent G'raha Tia Gaius van Baelsar Garland, Knight of Cornelia Garnet, Princess of Alexandria Giott, King of the Dwarves Gladiolus Amicitia Ignis Scientia Judge Magister Gabranth Locke Cole Neo Exdeath, Dimension's End Omega, Heartless Evolution Prompto Argentum Queen Brahne Quina, Qu Gourmet Quistis Trepe Ragnarok, Divine Deliverance Reno and Rude Ring of the Lucii Rinoa Heartilly Rufus Shinra Rydia, Summoner of Mist Shantotto, Tactician Magician Snow Villiers The Emperor of Palamecia The Lord Master of Hell The Prima Vista Tidus, Blitzball Star Torgal, A Fine Hound Ultimecia, Omnipotent Ultimecia, Time Sorceress Ultros, Obnoxious Octopus Vanille, Cheerful l'Cie World Champion, Celestial Weapon Yiazmat, Ultimate Mark Zack Fair Zidane, Tantalus Thief

Simba Returned King When To While The Challenger keyword rule text is (While challenging, this character gets +x .) The standard version of Simba Returned King has exactly that
Both Sazhs Chocobo and Zell Dincht hint at this being a Gruul-aligned strategy, and Gladiolus seems to confirm it