on pickup of elytra:
    2nd line of lore of event-item is not set:
        set 2nd line of lore of event-item to "&eWlasciciel: &7%player%"
    else:
        2nd line of lore of event-item is not "&eWlasciciel: &7%player%"
        cancel event
            
on armor equip:
    event-item is elytra
    2nd line of lore of event-item is not "&eWlasciciel: &7%player%"
    cancel event