This datapack adds an evolving summoner origin that I made to the origins mod. It requires the fabric API, the origins mod, and pehkui for minecraft 1.18.1. I might do a little vanity work to make things look smoother, but everything functions correctly.

Stage one:
No abilities
To evolve, enchant an item with an enchanting table

Stage two:
You can summon a snow golem(primary key)
You can summon a weak iron golem(secondary key)
You have one less heart
To evolve, summon a wither

Stage Three:
You can summon four snow golems(primary key)
You can summon two iron golems(secondary key, summoning bar must be filled halfway)
You can crouch to fill the summoning bar
You can summon a 40 block tall snow golem with 100 health(primary key while crouching, summoning bar must be filled)
You have three fewer hearts
You get weakness and slowness for three seconds when hit
To evolve, kill the ender dragon

Stage Four:
You can summon four snow golems(primary key)
You can summon two iron golems that will never attack you(secondary key, summoning bar must be filled to one fourth)
You can summon a 40 block tall snow golem(primary key while crouching, summoning bar must be filled to two thrids)
You can summon a wither that will fight for you(secondary key while crouching, summoning bar must be full)
You have five fewer hearts
You get blindness, weakness, and slowness for 6 seconds when hit
Does not evolve

If there are any bugs, please let me know so I can fix them.
If these explanations are not well demonstrated, watch the video for a better explanation.