Does Ahri's leader ability go on the chain, and can it be missed if not declared immediately when attacking?

Ruling: Ahri's leader ability is a defender trigger that goes on the initial chain at the start of combat. However, under updated rules for Houston, triggers that don't have an immediately observable impact on the game (like might changes) don't need to be announced until they become relevant (such as during the damage step). Players should still announce triggers, but consistently failing to do so may be considered angle shooting.

Sequence:

• Attacker declares they are moving to the battlefield
• Defender has opportunity to announce Ahri trigger on initial chain
• If not announced, the trigger is considered to apply passively until it becomes relevant
• The trigger must be acknowledged before damage calculation if it affects the outcome
• Intentionally playing quickly to prevent opponent from announcing triggers is angle shooting

Nuances:

• The rules interpretation changed during this discussion - initially treated as a missable trigger, later clarified that might-changing triggers don't need immediate announcement
• Triggers that involve targeting/choices likely still need to be announced
• If a player wants to respond during the initial chain, they should announce their intent even if opponent hasn't verbalized the trigger
• There is debate about whether skipping the initial chain entirely is problematic for priority windows
• This ruling was specifically for Houston events and may vary by head judge