Skill mechanic question for 3.28

Was Bane low key mega buffed or did I miss something in the reveal that prevents more than one active skill with a support attached? Can you run multiple curses with the supports corrupted to them and all effect the bane? For example if despair gets level 1 efficiency support on it, would that effect bane? Getting 3 curses with supports, level 21 23 bane, and two support could produce a huge dps buff.

The Coins imbue a support effect into the curse gem itself, not into your link setup. When Bane applies linked curses, it just checks "is this a curse gem? ok, apply it" and counts how many curses for the more damage multiplier. It doesn't inherit whatever support is baked into the curse gem.

Think of it this way — Efficiency Support imbued on Despair would affect Despair when self-cast. But when Bane applies Despair, Bane is the active skill doing the work. The imbued support lives on Despair's gem, not on Bane's support chain.

So the dream of 3 curses each with imbued supports all feeding into Bane's DPS doesn't work — Bane only cares about its own supports and the number of linked curses.

That said, league hasn't started yet and GGG hasn't specifically addressed this interaction, so there's a small chance I'm wrong. But based on how the linking/support system has always worked, the imbued supports on curse gems shouldn't propagate to Bane.

Also you can only have one of the coin corrupted gems in the link chain if I remember what they discussed in the reveal.