ah man i wish i could have been there. unfortunately for your opponent, you used the cards correctly. i will, however, add that tactics cards effects (like most other cards) go away when the card goes away, so the banding should have gone away after that turn.
since i have the crime of being vague, i will make this card specify that it only lasts that turn.
thank you for that hilarious story. sounds like knowledge of your deck build came in handy.
i'll bet your friends hate me now.
also (am i'm sure you know this but i still want to say it for other readers), just because you band samson to semna fortress does not mean that the fortress can enter the battlefield.