Tournament on 8MM6a.

TE-WT isn't a cure-all here. With passive (or tolerant) gameplay from both opponents, and on a Time Extension, the game can drag on until the 3rd month. However, if one of the players plays aggressively, they can also perform well on a Sudden Death. There's also the option of submitting a save for judgment (e.g., a draw) after a certain time has passed if it's unclear which side is winning.

Regarding the ban on Necromancy – without Goshi, Necropolis isn't that strong. The faction that will cause problems is Dungeon.