Only one preemptive strike and the enemy is on a 2-turn CD so you can take your first turn healing and kill him the next turn. Be aware that Hera-Is will bind almost all of your team members and followed by casting a skill bind so have a bind clear ready. I was using this team for reference: Verse/RagDra (triple God Killer, God Killer SA)/Revo Isis (Dragon Knight)/Rozuel (Another Justice -> ended up didn't need it)/CB Sakuya (Nargacuga weapon for full blind resist). You can replace Rozuel with any bind resist double SBR sub (Ruel, Famiel, Lumiel, Ariel). All team except both leaders have bind resist and 100% SBR even when Hera binds both Verse. RagDra took the heavy lifting on Hera-Is. A green TPA with some combo and she's dead.