Rule 418.1.e

Valid Damage is a positive integer amount, greater than or equal to 1 Damage.

• 418.1.e.1 Only Valid Damage is Dealt. Example: A unit reads “when I take damage, give me +2 [M] this turn.” A spell is played…

Rulings that cite this rule

• Does a unit with 0 or less Might automatically die?

Official Core Rules