Piratecat
Sesquipedalian
My players out of this thread, please. 
In one of my campaigns, the lvl 6 PCs have just fled the lair of a lvl 9 solo bloodkiss beholder after rescuing some captives but losing one party member. They intend to return the next day with allies and all their dalies. The question has been asked: what will make the fight exciting next time in terms of surprise/complexity when the players know its tricks, the full layout of the lair, and the PCs have all their big guns?
I'm curious how other people would handle it.
Components:
- undead blood-slurping beholder
- large damp underground smugglers cave attached to the city's sewer system, fairly near the shoreline
- two vertical wells leading to unknown parts, at least one partially filled with water
- several dozen dead bodies, drained of blood and hanging from chains and meathooks from the ceiling (act as difficult terrain)
If you were the beholder, and you guessed your foes were going to come back for you, what would you do? As the DM, how would you make the encounter exciting and memorable?

In one of my campaigns, the lvl 6 PCs have just fled the lair of a lvl 9 solo bloodkiss beholder after rescuing some captives but losing one party member. They intend to return the next day with allies and all their dalies. The question has been asked: what will make the fight exciting next time in terms of surprise/complexity when the players know its tricks, the full layout of the lair, and the PCs have all their big guns?
I'm curious how other people would handle it.
Components:
- undead blood-slurping beholder
- large damp underground smugglers cave attached to the city's sewer system, fairly near the shoreline
- two vertical wells leading to unknown parts, at least one partially filled with water
- several dozen dead bodies, drained of blood and hanging from chains and meathooks from the ceiling (act as difficult terrain)
If you were the beholder, and you guessed your foes were going to come back for you, what would you do? As the DM, how would you make the encounter exciting and memorable?