Budschie's Morph Mod — Reference
Core Mechanics
Soul Collection
To unlock a new morph, you must kill the target mob or player. Upon death, the entity will drop a floating 'Soul' particle. You collect this soul by simply walking into it. Once collected, the morph is permanently added to your library (unless changed by gamerules).

The Morph Menu
Players can access their library of collected souls by pressing the Morph Menu Key (Default: . or M). This menu allows you to scroll through all unlocked entities. Selecting an entity will trigger a transformation animation, changing your model, hitbox, and stats.

Abilities
Most morphs come with active or passive abilities. Active abilities are triggered using the Ability Key (Configurable in controls). For example, as a Blaze, the ability key shoots a fireball, while as an Enderman, it triggers a teleport.