Casting a spell with the scepter costs 5 experience points.
Infusion
The wither scepter can be obtained by taking damage from a wither to infuse a held magical sceper.
Attack - Wither Skull
Shoot a wither skull.
Protect - Repulsion
Get repulsion for 10 to 12.5 seconds.
{"color": 7561558,"experience_cost": 5,"infusion": [{"condition": "minecraft:damage_source_properties","predicate": {"source_entity": {"type": "minecraft:wither"}}}],"spell_attack": "magicalscepter:wither_skull","spell_protect": "magicalscepter:wither_repulsion"}