Spell fuel and repeated casting

Essence carried in the bag without being equipped does not enable a cast. Equip the chosen essence as ammunition. A cast with insufficient equipped fuel is refused; ordinary and concentrated stacks are never mixed or selected automatically. The last consumed unit clears the Ammo slot. Bow attacks require equipped arrows instead.

Concentrated arcane essence gives 5% extra direct spell damage, including eligible area hits and Spell Echo. Healing, ward strength and later Burn ticks keep their normal values. It uses the same essence count as ordinary fuel, including staff discount and free-hand surcharge. Preparing a Magic charge again pays the normal costs and replaces the prepared charge instead of stacking it.

Open the essence and recipe pages for current Divination requirements, materials, duration and XP. Conversion of ordinary into concentrated essence grants no additional XP. Summoning keeps its ordinary essence material costs.