Anyway Millicent Smith, Puritan Vampire Hunter says
"Put this card in play. If any of your vampires are blocked, burn
Millicent and your acting vampire (without combat). During your
discard phase, your predator takes control of Millicent."
If I take temporary control of, say, my predator's vampire with
something like spirit marionette while my predator has Millicent, does
the marionetted vampire burn if blocked?
Cos I used to run this Multi Millicent-Spirit Marionette deck
[millicent "keeps" other dudes untapped] and I forget the nuances.
No. The vampire you control is not controlled by your predator.
Wait until you have Millicent, then steal the vampire and get him blocked.
Thanks!