HHI is an ignore and a prevent.
Ignored characters (those with banding) are restricted from entering battle. It prevents all other good banding. If it is CBN, DD can be played and works.
Household Idols (Ap)
Type: Artifact • Brigade: None • Ability: None • Class: None • Special Ability: Heroes may not band. Good banding cards have no effect. • Play As: Prevent band abilities of Heroes. Ignore good banding cards.
*goes to get documentation*
EDIT:
Here is one such thread I found with Google-fu, though it is by no means the only one (this gets asked a lot). Note that Transfiguration was an example brought up in that thread, as a CBN banding card that would still work.
EDIT2: This really should be moved to
Ruling Questions, if a mod could.
