Sucreso

Scaling and Luminas

Level 2

Gain Perfection on receiving damage instead of Parrying or Dodging. Lose 1 Rank on Parry or Dodge.

Level 3

Ranks reduce damage taken by 20% per Rank, instead of increasing damage dealt.

Level 4

Applying Mark also applies Powerless.

How a grade turns into damage isn't confirmed yet; the grades and unlock steps are from the game's weapon table.