Dragonblade
Adventurer
First off, if you are using a module or monsters that predate MM3, you need to boost their damage based on WotC errata. I recommend around +5 damage per attack per tier as a good rule of thumb that you can use on the fly to boost your monsters.
Secondly, remember that Encounter powers can only be used once per encounter, and Immediate actions (whether interrupts or reactions) can only be used once per turn.
Thirdly, there is no shame in boosting the encounter difficulty to suit your players. Hell, all encounter balance in AD&D was pretty much based on DM experience and eye-balling things. Its only in 3e and 4e where for some bizarre reason people feel like they must strictly adhere to the CR or encounter guidelines. Thats absurd. If your players are optimized badasses, then boost the monsters to compensate. A good rule of thumb is that +1 level to a monster adds +1 to all attacks and defenses. Remember my previous rule of thumb about boosting damage as well for pre-MM3 monster stats. As soon as you boost a Heroic monster to Paragon, they should do +10 damage on all attacks, auras, etc.
Also for purposes of defender's marking multiple targets, I rule that as long as a monster attack is encapsulated within a single action, and as long as it includes the defender, then their mark doesn't come into play even if that monster's attack targets multiple PC's.
Secondly, remember that Encounter powers can only be used once per encounter, and Immediate actions (whether interrupts or reactions) can only be used once per turn.
Thirdly, there is no shame in boosting the encounter difficulty to suit your players. Hell, all encounter balance in AD&D was pretty much based on DM experience and eye-balling things. Its only in 3e and 4e where for some bizarre reason people feel like they must strictly adhere to the CR or encounter guidelines. Thats absurd. If your players are optimized badasses, then boost the monsters to compensate. A good rule of thumb is that +1 level to a monster adds +1 to all attacks and defenses. Remember my previous rule of thumb about boosting damage as well for pre-MM3 monster stats. As soon as you boost a Heroic monster to Paragon, they should do +10 damage on all attacks, auras, etc.
Also for purposes of defender's marking multiple targets, I rule that as long as a monster attack is encapsulated within a single action, and as long as it includes the defender, then their mark doesn't come into play even if that monster's attack targets multiple PC's.