421.1. Attaching is the act of linking two cards on the board together to combine their effects in some way. This causes one or more cards to become Attached and at least one card to become a Top-Most Card. See rule 716 Attachment for more information.
421.1.a. Attaching affects two cards at once.
421.1.a.1. One card will be designated as the one being Attached , and thus become Attached. The other will become the Top-Most Card.
421.1.b. This is represented by physically laying the Top-Most card on top of the other or others such that all Effect Texts and Might Bonuses are showing, but nothing else from the card or cards Attached.
421.1.b.1. In the situation where there is more than one card attached to the Top-Most card , they should be stacked in such a way that all Effect Text boxes and Might Bonuses are readable. The order of the Attached cards has no bearing on the application of effects.
421.1.c. The Top-Most card has all Effect Text of all cards Attached to it appended to its Rules Text.
421.1.d. The Top-Most Card has its Might modulated by the Might Bonus of all cards Attached to it.
421.1.e. Attaching one or more cards will cause those cards’ Rules Text to become Inactive for as long as they remain Attached. See rule 716 Attachment for more information.
421.1.f. Attaching a card will cause it to Detach from any card to which it is currently Attached.