718. Attached is the state of a card being linked to another card in this way.

718.1. A card remains in this state until Detached.

718.2. While in this state, the card’s Rules Text is Inactive. See rule 720 Inactive for more information.

718.3. While in this state, Abilities in the card’s Effect Text are appended to the Rules Text of the Top-Most Card.

718.4. While in this state, the card’s Might Bonus modulates the Top-Most Card ’s Might by the value listed.

718.5. Attached cards still have all properties of being a card on the board while in this state.

718.5.a. Attached cards still have all Types and Tags while Attached.
718.5.b. Attached cards still can be chosen or targeted by game effects while Attached.

718.6. Attached cards cannot be moved separately from the Top-Most Card they are Attached to.

718.7. A card may be Attached only to a single Top-Most card at a time.

718.8. Attached cards may have different Controllers from their Top-Most card.

718.8.a. Changes in Control of the Top-Most card do not impact Control of Attached cards and vice versa.
718.8.b. An Attached card still appends the abilities in its Effect Text to the Rules Text of the Top-Most card and modulates the Top-Most Card ’s Might by its Might Bonus.