Let's say that I want to inhibit a Mage for as long as possible by forcing them to don a suit of armor and then either wear it for the rest of the battle or waste even more time getting out of it. This means Spell Failure, Check Penalties, etc. and at least 5 rounds of wasted time (Chain shirt donned hastily).
Beguiling Gift uses a "gift" as a focus, urging the target to don the item for the duration. Once the duration ends, it has no obligation to keep using it, which is a shame because the duration is 1 round. With Extend Spell, we get 2 rounds out of it.
Is there a way to further increase the duration of Beguiling Gift?
Now, let's say that we instead of using a chainshirt which takes between 10 rounds and 5 rounds to put on, we get really ambitious and offer our target a full suit of armor, which takes 4 minutes to don no matter how you slice it (without help).
What penalties does someone suffer from wearing a partially-donned suit of armor?
How long does it take to remove a partially-donned suit of armor given that you've spent X rounds donning it?
One last thing. Probably the only way I can think of making this work. This is a little tangent to the spell and the armor logic, but it's related to the entire "scheme".
Can a cursed suit of armor urge someone to finish putting it on once they've started until it's fully donned?