Spawn wither:
`/function dev/wither_tempest/spawn`

Despawn wither:
`/function dev/wither_tempest/despawn`

Evolve wither:
`/function dev/wither_tempest/evolve`

Devolve wither:
`/function dev/wither_tempest/devolve`



Spawn specific form of the wither:
`/scoreboard players set "#wither_tempest_form" gvar <num>`
`/function dev/wither_tempest/form`

Modify the evolution speed of the wither storm (default value 1, higher for increased evolution speed):
`/scoreboard players set "#wither_tempest_consume_value" gvar <num>`