What does Pinata Skull do?

The in-game description says punch/beat enemies to make them drop a grenade. Website descriptions say kill Covenant enemies to make them drop a grenade.

When you kill any Covenant species, they will drop a grenade and it will detonate. Think of it as a Grunt Funeral skull on steroids.

> When you kill any Covenant species, they will drop a grenade and it will detonate. Think of it as a Grunt Funeral skull on steroids.

I’m still unsure.

Is it:

-by melee
-by death in general

And is it:

-a grenade to pick up
-a live grenade

?

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