Widget:RuneDisp
From Official Runecraft Wiki
Example:
{{#widget:RuneDisp|runefile=/images/b/b4/PegasusFull.glb|multilayer=true|activationlayer=2|runefiles=/images/3/3d/Pegasus_1.glb|runefiles=/images/6/6e/Pegasus_2_act.glb|runefiles=/images/5/56/Pegasus_3.glb}}
Note runefiles is actually an array, which must be added to by calling it multiple times. It is built from layer 1 -> top.