Talk:Chiron/@comment-38277271-20190806121029/@comment-27971189-20190806131044

It truly depends on how player decide to deal with situation.

Chiron have higher number and lower CD but if there is no 'plan' to reduces amount of party member it depends on whether the buffed unit capable to perform good under RNG of three deck be it by stars or elimination of party members, thus he's popular pick for CQs where party can be reduced to minimum for maximum usage of his buff.

Helena have lower number and 7 CD but she also bring party charge, which benefit more if you expect follow-up like Kaleidoscope train, and carrying AAAQB that allow mitigate risky deck like AQBBB. As Helena herself fall into crit-based Servant, that 20% is enough to let you expect the team running strong when consistent crits achieved, like triple 2030.

Cooldown argument better goes to her Magical Tuning-- then again she's still the only 4* Caster with party charges + star-regen + 50% NP Damage Up + card buff + ignore defense AOE NP + debuff + Assassin killer from Bond CE.