This is a quick crafting how to for the Alternating Sceptre I use in my Sunblast SelfChill Explosive Trap build (video: • [PoE 3.20] SelfChill Explosive Trap ... )
It generically works for crafting any +2 Gems Alternating Sceptre if you want to stop there for roughly 5.5 divines. From there it's roughly a 50/50 to land a useful suffix for the trapper build, so an additional 4 divines worth of Prefix Cannot Change for a total cost close to 10 divines.
Note that this method is not 100% guaranteed, but like all profit crafting in PoE requires winning a gamble of some sort. It's an 80% chance of success to land +2 gems.
0:00 Intro
0:43 Buy a base off trade
1:10 CoE Emulator
2:50 Fossil Crafting
3:13 Split Beast
4:12 Setting up prefixes/suffixes for +1 Phys gems
5:08 Add/Rem Physical
6:15 Veiled Chaos / Unveiling a useful suffix
9:10 Cost review
9:38 Filling Suffixes, What to do
10:36 Redeemer Slam to finish