This probably has come up earlier but I'm too lazy to search:
1 direbadger wizard
2 myconids
1 yuan-ti (half-blood or abomination) or wereserpent
Tactics: the direbadger wizard casts mirror image
=> badger, badger, badger, badger, mushroom, mushroom, badger, badger, badger, badger, aaargh a...