Originally Posted by
jacobs67
"Keep in mind the subsequent nuking penalty aka the Nuke Wall. If level 3 Skillchains (light or dark) are being created you may see better numbers from one mage nuking a separate element from another."
This shouldn't apply to Apex because they're not Notorious Monsters. The cumulative damage resistance/magic wall only applies to enemies that check as "Impossible to gauge" normally. Also the penalty isn't tied to element, it's magic damage of any kind
Edit: Just tested it to be sure with Astral Conduit magic pact spam and yeah, no damage reduction of any kind, unlike with NMs where it's guaranteed to happen