Rule 143.2 Might

Might: The combat statistic of a Unit. Used to determine a Unit's contribution to Combat, as well as when it is Killed by damaging effects.

• 143.2.a If a Unit ever has nonzero damage marked on it equalling or exceeding its Might, it is Killed.
• 143.2.b If a unit's Might is ever less than 0, it is treated as 0 when referenced by spells and abilities, and when summing…

Official Core Rules