-
You can manage & track your card collection and decks once you create an account and login.

If Captain Elita-1 is my last character and is KOd, do I get to use her ability before I lose the game?

No. Youll lose the game just after she is KOd, before you can use her ability.
Source: Wizards of the Coast (2019-03-01)    【Link to Ruling】
Tags: Captain Elita-1, Special Ops • Ranger