Hexproof is irrelevant right here as that stops (on this case) a participant from being focused by spells or talents:
702.11c “Hexproof” on a participant means “You may’t be the goal of spells or talents your opponents management.”
Leyline of Punishment doesn’t goal (as a result of it doesn’t use the literal phrase “goal”) so is unaffected by the unnamed enchantment giving hexproof; Complete Rule 115.10a:
115.10a Simply because an object or participant is being affected by a spell or capability doesn’t make that object or participant a goal of that spell or capability. Except that object or participant is recognized by the
phrase “goal” within the textual content of that spell or capability, or the rule for that key phrase capability, it’s not a goal.
Subsequently we check with the Golden Rule:
101.2 When a rule or impact permits or directs one thing to occur, and one other impact states that it could’t occur, the “can’t” impact takes priority.
Given the 2 results “Forestall all fight injury that might be dealt this flip” (Holy Day) and “Injury cannot be prevented” (Leyline of Punishment), the Leyline of Punishment impact takes priority and the injury is dealt. It is in all probability finest to not check with this as “negating” the impact of Holy Day although as that is not a time period used within the guidelines.
(Guidelines references from the 2025-09-19 Complete Guidelines)
