, : Target creature becomes an enchantment and loses all abilities until a player casts a creature spell.
A “creature spell” is any spell with the type Creature, even if it has other types such as Artifact or Enchantment. Older cards of type Summon are also Creature spells.
The creature stops being a creature (or any other permanent type) and is just an enchantment with no abilities.
: Target creature becomes an enchantment and loses all abilities until a player casts a creature spell.