TripleInfusion

Spells can be infused with up to three elements.

In the base game a spell gets an infusion at level 7 and a second one at level 14, and that's the limit. With this mod, once a spell has both infusions, a later level-up (level 21 by default) opens one more infusion shop for that spell.

How it works

You pick a third element (Fire, Lightning, Acid, Ice or Dark) from the shop, just like a normal infusion.
The spell keeps its two-element combo, and the third element's own effect is added on top on every hit. For example, Fire + Lightning + Ice burns and shocks like Fire + Lightning, and also chills like Ice.
You can pick an element the spell already has (Fire + Lightning + Fire) to double up on it. You can turn this off in the config.
Locked elements stay locked: the shop only offers elements you've unlocked.

Multiplayer

Everyone in the lobby should have this mod. Element effects are applied by whichever game handles the hit, so a player without the mod won't see or apply third elements.

Works with MoreWizards and StarterSpells.

Config

In your mod manager's config editor (or BepInEx/config), section [Third Infusion]:

Setting	Default	What it does
Enabled	true	Turn the third infusion on or off.
SpellLevel	21	Spell level for the third infusion shop (vanilla infusions are at 7 and 14). It's offered at the first level-up at or above this.
AllowRepeatElements	true	Allow a third element the spell already has.
Choices	2	How many elements the shop offers (1–5).

Known limits

The spell's look and icon still show the two-element combo. The third element shows in its hits, not its visuals.
In the third infusion shop, the card's preview shows the current combo rather than all three elements.
The third infusion doesn't count as an "infusion" for artifacts or challenges that track infusions.