Acheron (2) | 2.

: Her first Eidolon (E1) already provides an 18% Crit Rate boost; combined with the stat-heavy buffs from Harmony units allowed by E2, her damage ceiling increases exponentially. Strategic Value

: At E0, Acheron requires two additional Nihility teammates to maximize her damage multiplier (160%). E2 reduces this requirement to just one other Nihility unit, freeing up a slot for powerful Harmony supports like Robin or Sparkle . 2. Acheron (2)