It sounds intuitive that when linking a support gem to a skill gem, the support gem can in a way alter the type of the skill. For example, it makes sense that linking a Ballista Totem Support to a Galvanic Arrow will make the skill benefit from effects that increase totem damage.

What's less intuitive is whether the skill altered this way still benefits from effects that boost the original type of that skill. To use the previous example with Ballista Totem Support and Galvanic Arrow, will taking passive skills that increase bow damage affect the damage of the totem as well?

The wiki page of the Ballista Totem Support says:

Totems use the player's own skills as though the player had cast them, ...

... which would imply the skill will still benefit from increased bow damage, but it doesn't directly confirm or deny it. I'm still new to the game and would really prefer a confirmation before spending my hard-earned skill points (considering how hard it is to unlearn passive skills).

1 Answer 1


To put simply, extend is the answer and yes it will work.

Support gems will not "override" the original gem type. In your specific case, the bow modifiers in your skill tree will increase the damage of your Galvanic Arrow. You are not increasing the damage that all totems in your build do, just totems that use bow skills. It's a very small distinction and may seem annoying to point out, but an important distinction to clear up.

If you took passive increases to totem damage, it would also work in your case because the skill (Galvanic Arrow) is being used by a totem.

A good way to check to see what increases work with your setup is to use something the community uses frequently called Path of Building. Make sure to use the "community fork" because the original isn't being updated anymore, so the community came together to work on it and keep it updated with new gems and items as the game grows. You can plan, update and import/export entire builds using this. You also get output of all of your characters stats in real time as you fill out the passive tree and update your items.

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    Thank you for the clarification, but especially for the link to the build planner tool! I had no idea something like this existed - but considering the size of the skill tree, I should have seen it coming... ^^ Commented Oct 4, 2021 at 17:12
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    @MartyCagas You'll also want to check out POE Lurker and Awakened POE Trade for additional in-game tools. Those 2 are the most popular external tools along with PoB. Enjoy your 100 hours of out-of-game build planning :)
    – FoxMcCloud
    Commented Oct 4, 2021 at 17:37
  • "Enjoy your 100 hours of out-of-game build planning", oh I will, I so very much will... :D Commented Oct 4, 2021 at 18:13
  • A neat thing about this "extend" system is that it can enable new support gems for a given skill. For instance Lifetap Support gives any supported skill the "Duration" tag, which then allows it to be used with supported by something like Swift Affliction Support. It's mostly used to give additional supports to something like Righteous Fire (which doesn't have the "Duration" tag by default) but there are certainly other applications as well.
    – DevAir1
    Commented Oct 6, 2021 at 15:38

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