[AOE] The 70% chance only refers to the cooldown reset aspect. The rate of landing the hit itself depends on Helios' Accuracy stat as usual.
(Active 2) Flow of Time
Like the other cooldown recovery speed buffs, this only affects active skill cooldowns, i.e. non-passive skills. The cooldowns of skills are not immediately cut to 50% of their original timers. The buff acts like an accelerator as it simply speeds up the rate which skills cool down. Put it in a way that's easier to understand, skills can be cast 50% more often. If a unit uses a skill 10 times during 60 seconds, they can use the same skill 15 times during 60 seconds under this buff This stacks multiplicatively with other cooldown recovery buffs(e.g. Askr and Gigantes Helios), so for example, using Key Helios cooldown passive with Key Helios cooldown active: *=, which effectively means skills are cast 98.8% more often.
(Active 3) Helios' Protection
(Passive 1) Righteous Revenge
(Passive 2) God's Gift
This passive is fundamentally different than Fryderyk the Tenor's Master Conductor. While his passive increase all main attributes for all allies, Helios increases only the main attribute of each ally. For instance, Commander Chronos would have his STR increased, but not his DEX and INT. Kymael the Just and Helios herself would have their INT and STR increased, but not their DEX.[confirmation needed] Here the comparison of the original Korean descriptions (Fryderyk then Helios)
아군 전체의 힘, 민첩, 지능 10% 증가.
모든 아군의 주요 능력치(힘, 민첩, 지능) 중 공격력을 올려주는 능력치가 15% 증가합니다.