Is Second Wind a power?
Does a character wearing Healer's Brooch and Gloves of the Healer gain extra hit points when they take their Second wind?
No, not a power.
However, the confusion is understandable - it works just like a power. It merely happens never to be labelled as such; and it virtually never matters - except in rare cases such as the OP's.CB is not a rules source, and that is the only place it appears as an Encounter power. In the source material, which is always correct, it is not a power. Welcome to go look it up in either the PHB or the RC.
So, again "No, not a power."
lostingeneral said:Given that the CB cards are largely just a player reference, the "Second Wind as a Utility Power" is probably just to keep them aware that the option is present.
I haven't seen any other place besides that where it was called a power in any respect.
Basically, when the issue of tracking Second Wind comes up (on character sheets / aids in general) it's formatted as if it where a power, because that's how the cards are set up and showing it any other way would be confusing. But in the actual rules text it's just a block of text, even where other powers are shown in the power-block format.The Red Box treats it as a power, as it's written up on a card the same way as all of the other PC powers.
or the like. When feats refer to second wind, they say:when you use your fey step power
The lack of the word power in these situations tells me its not one.when you use/expend your second wind