Leo's reaction ability is to "Play an Ally asset, reducing its cost by one". I suppose it costs zero action (because it's a reaction ability). But does it trigger an attack of opportunity ?
Same question for Ursula. She has a free Investigate action, but does it trigger an attack of opportunity ? If the answer is yes, what would happen with Jake Williams in play ? Let's imagine Ursula is engaged with an Enemy. Her first action on her turn is to Move. No attack of opportunity thanks to Jake. Then she has a free Investigate action, but I suppose this one triggers an attack that Jake can't prevent, right ?
I confess this "free action" business is very unclear to me...