Hill Troll says extra damage becomes threat, Frodo has the option to turn any damage he takes into threat. How does this play out?
Scenario 1: Frodo blocks the 6str attack but uses his ability. All Troll dmg is cancelled so Troll's ability does not apply. However, how much dmg is actually canceled? All 6 of the Trolls STR? The trolls STR minus Frodo's defense (4)? Only the dmg that Frodo can sustain (2)?
Scenario 2: Same questions as above, but for an undefended attack where the damage is given to Frodo then canceled.