Mega Greninja's underlying art happens to work particularly well in monochrome gold because the ninja design relies on silhouette and motion rather than colour palette
The usage of a Warrior Link-2 and Link-3 that can both accept generic materials (such as "Ferocious Flame Swordsman" and "Black Luster Soldier - Soldier of Chaos") can facilitate a version of this loop as well
He overcame the fear at the end of the episode Yusei is quite skilled in karate, as shown in episode 25, when he single handedly fought through several security guards
When Deep Diver is destroyed in battle, his special ability activates, I can pull one monster from my deck
The card game, luckily, does not feature 108 cards within the archetype, at least for now
Harpie's Feather Duster is so powerful it's currently limited, as any deck has free access to a complete wipe of Spell and Trap cards