[Sin Enhancement], among the exclusive weapons of the Great Sin Scholar, it is second in importance only to Burn Card.
It is commonly known as "Enhancement" or "Fusion Card."
A Sin Card that's enhanced will have its upright effects slightly strengthened, but this isn't the important part.
After all, a few percentage points of damage value won't make much difference; the important thing is the reversed effect—the summoned Great Sin Beast itself will receive an attribute enhancement. The attribute bonuses from multiple fused cards are cumulative... In the game, the value is 5% per card, so fusing five cards would result in a 25% enhancement.
The Great Sin Beast's baseline stats are already high, and with this boost, the enhancement's proportion will be even greater.
An enhancement of 5% to a Demon Dog's stats might not even be noticeable; but if a raid boss gets a 5% boost on all attributes, that's enough to wipe the whole raid.
