Shed Shell’s description reads as follows:
“Holder may switch out even when trapped by another Pokemon, or by Ingrain.”
However, this is leaving out critical information. You can also swap out with Shed Shell after using Jaw Lock and No Retreat. This is a small detail that is both useful and harmless to add, so I propose an updated, inclusive description:
“Holder may switch out even when trapped by another Pokemon, or by self-trapping moves.”
Proof of Shed Shell’s functionality with Jaw Lock and No Retreat:
https://replay.pokemonshowdown.com/gen9ou-2263608102
https://replay.pokemonshowdown.com/gen9ou-2263611622
“Holder may switch out even when trapped by another Pokemon, or by Ingrain.”
However, this is leaving out critical information. You can also swap out with Shed Shell after using Jaw Lock and No Retreat. This is a small detail that is both useful and harmless to add, so I propose an updated, inclusive description:
“Holder may switch out even when trapped by another Pokemon, or by self-trapping moves.”
Proof of Shed Shell’s functionality with Jaw Lock and No Retreat:
https://replay.pokemonshowdown.com/gen9ou-2263608102
https://replay.pokemonshowdown.com/gen9ou-2263611622