Infusion

The act of infusing one's Od into an inanimate object (Catalyst), allowing one's Manus to manifest around or through the object. Infusion is very common among Magi as it consumes less Od going through the catalyst rather than outright manifesting the Manus, the major downside is that infusion slowly causes damage and degrades the catalyst it is being infused into. Thus magi will often have to have their weapons/armor repaired or replaced.
Example: Magi with Fire Manus infusing his Od into a sword. The sword would then either simply heat up or sprout flames depending on how much od the magi infuses. This consumes less Od compared to if the Magi were to shoot flames from his hand out right.

Effect

One's manus will flow through the catalyst, amplifying its effectiveness

Source

One's own Od