From Melvor Idle

Template for quickly including in-line Mastery requirements (similar to Template:SkillReq).

Example: {{MasteryReq|Dragon Javelin|90}} produces Dragon Javelin (item).svg Mastery.svg Level 90.

The optional type argument can be used for things that aren't items. For example, {{MasteryReq|Qimican|type=constellation|90}} becomes Qimican (constellation).svg Mastery.svg Level 90

The showtext argument shows the name of the item as well. For example, {{MasteryReq|Rune Essence|showtext=true|50}} becomes Rune Essence (item).svg Mastery.svg Level 50 Rune Essence Mastery