Does a continuous effect that changes a creature's type in an earlier layer override a later layer effect that removes all abilities?

The layer system (CR 613) processes continuous effects in a fixed order: layer 4 handles type and subtype changes, while layer 6 handles ability addition and removal. These layers are cumulative and sequential, not competitive — a later layer never 'overrides' an earlier one; it simply applies afterward to whatever state the permanent is in after earlier layers resolved.

So if an effect in layer 4 changes a creature to, say, an Elk (removing its creature type and giving it a new one), and then a layer 6 effect removes all abilities from that creature, both effects apply fully. The creature ends up as an Elk (from layer 4) and has no abilities (from layer 6). Neither effect cancels the other — they stack in sequence per CR 613.1.

The only complexity arises with dependency (CR 613.8): if one effect's result would change whether another effect applies or what it does, the dependent effect is applied after the effect it depends on, potentially out of normal layer order. But a simple type-change and a blanket ability-removal typically have no such dependency between them.

Concrete example: A Humble Defector has been affected by an effect making it a 3/3 Elk with no other subtypes (layer 4). Then Humility's effect removes all abilities (layer 6). The Defector ends up as a 3/3 Elk creature with no abilities — it is still an Elk (layer 4 result stands) and still has no abilities (layer 6 result stands). Humility does not undo the type change.

References: CR 613.1 (layer definitions), CR 613.1d (layer 4: type/subtype), CR 613.1f (layer 6: ability changes), CR 613.8 (dependency).