Heroic? While it's true Elidibus would easily recognize the reasons why his actions may be deemed so, such was not his true intention. He would like to live through the encounter as much as the next person and it's thus appreciated that Cortana acts to minimize the added burden of damage to his own person.

It affords him a measure of time to spend a bit on a minor healing. Clemency, that's what the modern Eorzeans call it, no? Regardless it is enough to get Elidibus back to a standing position and place some weight on the bitten ankle, though there's still some pain. He can fight and does so, as much to mitigate the cost of taking blows he receives from both his own battle and Cortana's as to fend off the snakes seeking to take him down with their electric shock.

But his grip trembles from what has gotten through of earlier attacks and he's only just got a firm enough hold on his blade and shield. Another shock getting through, particularly without the ward in place, will likely disarm him.

Should Yelena swing near him before that time however, she'll find he helps where he can with the weapon, to fend off her attackers or with small bursts of magicks similar to the earlier attack, though far less potent; think of it now more a way to cause the attackers to hesitate or grant an opening than something that would completely rid her of them.

[OOC: It would be very reasonable to expect the 'cover' to run out somewhere amidst the enemy's next tag. It is not a very long ability at all.]