Deathtouch kills the creature no matter how it gets damaged
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

Kozileks Command Kozilek's Command does a ton for you in a colorless space, from scrying to being colorless removal to providing graveyard hate
If youre more creature-focused, then mana dorks may be more to your liking
The combo with Nine-Lives Familiar and All Will Be One offers a potential one-turn-kill with the right setup
BREAK Pokmon can be seen as upgrades to fully-evolved Pokmon, and are played sideways over their prior evolution