Unyielding Grip

If you have no cards in your hand, this gets +3

.

Blade Break

Rulings

From the Compendium of Rathe release notes

Unyielding Grip’s first ability generates a conditional continuous effect that is always checking. If you have cards in your hand when you defend with this then have no cards in your hand, this will get +3. The reverse is also true: if you have no cards in your hand when you defend with this then add a card to your hand (e.g. draw), you will no longer have the defense increase.

Keyword notes

Bladebreak - Equipment that are fragile and break after being used to defend. If you defend with a card with Blade Break, destroy it when the combat chain closes.

When you defend with a card it remains on the combat chain until the chain closes, therefore you cannot defend with an equipment multiple times on the same combat chain.
When this card is destroyed, it is sent to your graveyard.
The ability becomes a layer on the chain when the combat chain closes.
The Blade Break ability becomes a layer on the chain when the combat chain closes.
The ability goes on the stack when the combat chain closes.

All keywords

ClassGeneric

TypeEquipment

SubtypesArms

Defense0

KeywordsBlade Break

SetsPEN