Lone Wolf Development Forums - M&M 3rd ed. Source of "Hide Minions" Extra for Summon?

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Source of "Hide Minions" Extra for Summon?

So, a player put this Extra on their character, stating that it's in Herolab (which it is) but I can't find any reference to which book it comes from.

The text of the Extra:

Quote:

This extra hides your summoned minions. This is useful for heroes who summon many identical minions, or summon minions of a broad type. At rank 1, only one minion will be displayed. Rank 2 will hide all summoned minons.

It's not tagged with any Source book, and my scans through the books noted as being included in Herolab, as well as a grep through my PDF copies, has found not matches. Did Lone Wolf make this one up?

Given that it's zero cost, I'm certain that this is just the way that Lone Wolf implemented a display customization for characters using the Summon Power.

Oh... I was missing the obvious.