slugfencer is correct, and here's why: Any card with more than 1 brigade is considered "multicolored" (see Invoking Terror). T1 has a restriction of 1 per deck of multicolored cards. The only reason dual-brigade cards are allowed up to 2 in T2 is because there is a specific provision for cards with exactly 2 brigades that allows 2 copies per deck in T2 (I believe, my T2 is a bit rusty). They are still "multicolored" and would fall under the same fate as other multicolored cards if that provision did not exist.
So, for T1, 1 per deck of any card with more than 1 brigade.
