[Focus Energy] flexible for Reflex Coil for Corpus and Corrupted missions. This is because enemies with shields have a shield gate which blocks non-toxin damage and prevents them from being one-shot.

Ideal Riven depends on how much external CD you have e.g. Violet Archon Shards or Magus Aggress and if you are running external elemental buffs like Nourish

• With NO external CD or external buff, you want CD/DMG/CC/heavy efficiency and replace focus energy
• If not running nourish, with at least 1 Violet shard, you want DMG/CC/Toxin/Heavy efficiency and replace focus energy
• With nourish, you will need about 2 violet shards and run DMG/CC/heavy efficiency