Lectern

This is Mythic mobs module improvement that does allow Server Owners to specify Single, ANY or specific Set of Mythicmobs to be killed.
Provides an option for setting up Mob level condition, either 0 for Any, specific level killed or range of levels like 1-10.
It allows you to set custom objective message individually per Stage including %count% placeholder.
http://i.prntscr.com/xhXk9QX3S1OJz4dXWsTeEg.png

NOTE:
Keep in mind if you don't need specifically Multiplayer/sharing option or any other option. You could still give a try to the Free MythicMobs module (At the moment of writing this, the module seems abandoned) without Multiplayer Sharing, further info you can find in Quests Wiki.