Details for Skeleton King Sword - how much healing?

[Imminent Orbit]

I'm not sure I get how this sword works. I do some damage to some enemies, getting my combo bonus up, get close and left bumper, only to get maybe 1-3 total? Do I need a huge combo bonus? Does it matter how many enemies I'm near? Where can I find details on this?

[Ratt]

The sword can heal you in two ways:

1) Get a long enough combo to turn the blue interface elements red, and then each normal attack from that state will restore 1 health.

2) Use the weapon active ability (default key is 1) while near at least one enemy, and it'll deal some damage to each enemy in range and heal you for 1 health per enemy hit.

[Imminent Orbit]

Ah, so I should just use it whenever it is charged if there isn't an opportunity to build up the combo. Thanks.