SDT is mustplay in ALL highlanders, even in mono red. Who doesnt play it, well, it is his mistake. Usually those players want to ban SDT, because they dont know how/dont want to, make full profit of its power. It is skill intensive card, which is avalaible to all decks, so do not punish players, who know how to play it correctly, just because for others it is simply "stupid".
I vote for NO BAN.
I vote for NO BAN.