Rules glossary
↑ Parent rule: 709.5 Some split cards are permanent cards with a single shared ty…
709.5d A permanent with a shared type line is given the “left half unlocked” designation as it enters the battlefield if its left half was cast as a spell. It is given the “right half unlocked” designation as it enters the battlefield if its right half was a cast as a spell. If it’s entering the battlefield and neither half was cast as a spell, it enters with neither unlocked designation.
No sub-rules.