"Shame" lost soul, Unholy writ, and Thirty Pieces Silver to get rid of their own possible Garden Tomb heroes. More people these days are throwing John, Peter, etc into their decks just in case they face a Garden tomb deck. Yes, THEIR heroes can use YOUR Garden Tomb. Keep this in mind and be wary of your own multi-color defense. If you go multi-color defense against another Garden Tomb deck, you will likely lose.
Just my opinion though.