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I'm explaining it again: in this matchup, if the Warlock wins the coin toss, the SOD player will choose from the Warlock's templates, leaving the mirror match as the only option for the template the SOD player hasn't played. You're simply giving him a choice of 2 templates instead of 3, and that's an imbalance! I suggest replacing Diamond with Dwarven Tunnels in the SOD template selection; that would be fair. I hope I've made my point clear.)