OverviewUpgrade Thornmail Win Rate by StageBest Champions for Upgrade ThornmailUpgrade Thornmail Augment ExplainedUpgrade Thornmail Mechanics BreakdownUpgrade Thornmail Trigger ConditionsWhat Does Not Trigger Upgrade ThornmailUpgrade Thornmail Hidden MechanicsBest Champion Types for Upgrade ThornmailLow-Value Champion Types for Upgrade ThornmailUpgrade Thornmail Playstyle TipsBest Augment Combos with Upgrade ThornmailWhat Not to Pair with Upgrade ThornmailUpgrade Thornmail Common Mistakes
Upgrade Thornmail Trigger Conditions
Activation windows and valid triggers
Augment
Upgrade Thornmail is most valuable when the champion can reliably activate its intended effect.