Protean Thaumaturge

If an effect begins to apply to Protean Thaumaturge before it becomes a copy of another creature, that effect will continue to apply.

Protean Thaumaturge copies the printed values of the target creature, plus any copy effects that have been applied to it. It won’t copy counters on that creature or effects that have changed its power, toughness, types, color, or so on. Notably, it won’t copy effects that made the target creature become a creature.

If an enchantment creature enters the battlefield under your control, Protean Thaumaturge’s ability can target it.

If Protean Thaumaturge copies a creature that’s copying something else, it will become whatever the target is copying.