Summoners War - Seara & Jojo (Wind Oracle & Fire Joker) - Duration: NO CELL TEM JOGO.
Fire Joker I think (I've only been able to use a 5 star Jojo) has good dungeon presence, but isn't "necessary" despite having a fairly good leader.
Joker Fire Jojo Awakened Fire. How to get: Mystical scrolls, fire scrolls and Fusion Hexagram. Awakened Bonus: New Skill [ Fire Magic].