Can Irelia's Legend ability be used during a showdown to untap her?

Ruling: Irelia's triggered abilities will go on the chain whenever their conditions are fulfilled, including during combat. If you can fulfill the conditions for her abilities during a showdown, they will trigger and go on the chain.

Sequence:

• Fulfill the condition for Irelia's triggered ability during the showdown
• The triggered ability goes on the chain
• The ability resolves (including any untap effect)