So, for a fanfic, I realized I wanted an ace card for the main character: Knight Chris. This card will be a part of the Knight Chris Duel Logs.
The duel logs focus on a journey into the Spirit World, where a boy named Chris, along with a few friends, end up in a long adventure. Knight Chris has lost his real will to live basically. Dueling is barely passionate anymore because everybody back home is a scrub. He will also end up facing Cretin, someone who uses the Wicked Avatar. His quest is basically to heal somebody he hurt.
His dueling style focuses on taking advantage of when the opponent is weak. His style can even be described as "pressure-point" since he only strikes right when the opponent is at their most vulnerable, and when it will gain him the most advantage. Example: He'd let you Synchro Spam, then he'd use Torrential Tribute. He also runs a rank 4 and rank 3 Warrior-Type spam Deck that also uses Manga Warrior Synchros.
The ace card must be the following:
Have some relation to either/both spirits (duel monster spirits, not necessarily Spirit Monsters) and gods (whether in name or design).
Effect must be simple, yet powerful/decent.
It can be a: Pendulum, Xyz, Synchro, or Effect monster.
Note: Just because you're a winner doesn't mean you'll necessarily have your card be Chris' ace. It may still feature, however.
Drill-Tail Protector Dragon
EARTH / Dragon-Type / Synchro / Effect / Level 7 / 2500 ATK / 2000 DEF 1 Tuner + 1 or more non-Tuner Monsters
Once per turn, during either players turn, you can halve this cards ATK and if you do, this card cannot be destroyed by battle, also, neither player takes Damage from battles involving this card. These changes last until the End Phase. At the end of the Damage Step, if this card battles an opponents Monster and that Monster is not destroyed by that Battle: Its ATK becomes 0.