Does Mask of Foresight's +1 might bonus persist after a unit leaves combat, and does it stack if the unit attacks alone multiple times in the same turn?

Ruling: The +1 might bonus from Mask of Foresight lasts for the rest of the turn regardless of whether the unit leaves the battlefield, joins other units, or loses attacker/defender status. Each time the unit attacks alone in the same turn, it gains an additional +1 might that stacks with previous bonuses.

Sequence:

• Unit attacks alone and gains +1 might for the turn
• Unit can move to base or join other units and retains the +1 might
• If the unit attacks alone again in the same turn, it gains another +1 might (now +2 total)
• This stacking continues for each separate attack made alone during the turn

Nuances:

• The bonus persists even if the unit becomes joined by other units after gaining it
• The bonus persists even if the unit loses attacker or defender designation
• Multiple Mask of Foresight artifacts multiply the bonus (+3 per attack with 3 masks equipped)