RotR - Robes of Xin-Shalast and playing another item on the same check

[Dark Nero]

Game Edition: Rise of the Runelords

The item Robes of Xin-Shalast says:

"Reveal this card to add 2 to an Arcane or Divine check. You may use another item on this check.

When you take Combat damage, reveal this card to shuffle up to 2 cards into your deck instead of discarding them.

Reveal this card and discard an item to search your deck and choose an item to add to your hand."

The question is: if I fail a combat check and use it to shuffle 2 cards into the deck, can I play another item to further reduce the damage?

[Jenceslav]

Timing should be - first reduce the damage by armor, items, whatever, and only when the damage is decided, play Robes of Xin-Shalast. As worded here, it would not be possible to play it together with another item (unless it has You may use another item on this check or "freely").
In my rewording into Core, I made this thing semi-armor like and allowed this to be played freely. There is similar (Grounded) Studded Leather Armor in Curse that works mechanically similar to the Robes, which inspired me to this.
Seeing as this is a AD-6 Loot item, it should be quite powerful, so I would allow another item to be played, but RAW it should not be allowed.

[Whipstitch]

I think the question boils down to whether the "You may use another item on this check" means the card may be played freely for any of its powers. The answer is no. That sentence is tied to the first power. (The first power is the only one affecting a check anyway.)