3 Chaos, the Endless Clive, Ifrit's Dominant Cloud, Planet's Champion Esper Terra Firion, Wild Rose Warrior Freya Crescent Garland, Knight of Cornelia Gilgamesh, Master-at-Arms Giott, King of the Dwarves Gladiolus Amicitia Ifrit, Warden of Inferno Joshua, Phoenix's Dominant Kefka, Court Mage Kefka, Ruler of Ruin Kuja, Genome Sorcerer Lightning, Army of One Lightning, Security Sergeant Phoenix, Warden of Fire Prompto Argentum Queen Brahne Raubahn, Bull of Ala Mhigo Rydia, Summoner of Mist Seifer Almasy Shantotto, Tactician Magician Tellah, Great Sage Terra, Magical Adept The Emperor of Palamecia The Fire Crystal The Lord Master of Hell Trance Kuja, Fate Defied Vaan, Street Thief Vivi Ornitier World Champion, Celestial Weapon Zell Dincht Zidane, Tantalus Thief
If you just want a clean, straightforward one-turn kill, Chandra's Ignition is a pretty good option, able to smite every creature and player in such dramatic fashion that they probably won't really mind
At the same time, they also focus strongly on the set they feature either by exploring one of their main theme or a new rule/mechanic featured in the set
The release of The First Chapter exceeded demand, with players struggling to find cards
Note that's per instance, not for the amount, so something that triggers often like Soul Warden is better
Most TDFCs have an ability that tells you how the permanent transforms to its other face