I have 2 questions, one generally-scoped and one specific:
Can I activate the effect of Disenchanter while it is still in my hand?
In general, can one activate monsters' ignition effects from the hand?
Disenchanter:
Once per turn: You can target 1 face-up Spell Card on the field; remove 1 Spell Counter from anywhere on the field, and if you do, return that target to the hand.