If you're going up against a Dragon you don't cast your concentration spells until after it breaths.
Not how we do it. We have found prebuffing and sending the martials in to engage first, then moving into range more effective. The martials absorb the breath weapon, then we move in.
The casters in my party know this. They also work together to mitigate hits, use full cover to their advantage, etc.
A dragon can bypass full cover with its move. Depends on how the DM runs it. If your caster moves out, blasts, and hides behind full cover away from the martials, the dragon can swoop behind it, hammer on the caster, wing buffett, then bounce 40 feet in the air. If the caster is one casting
fly and concentration is broken, the dragon has a good chance of cutting off access to itself by martials and setting itself up for an easy win. You have to be very careful how you position and what you encourage the dragon to do. We tried the back and forth behind cover. Not real effective against dragons.
Very effective against many other monsters.
Also the way the game works - one big hit for lots of damage or many small hits for small damage. The big hit can be avoided with abilities like cutting words, warding flare, popping shield, etc. The smaller hits are a bunch of DC10 checks which are easy to pass with the appropriate feats.
Cutting words softens a breath weapon only slightly. As far as big melee or ranged hits, all those abilities help. Not guaranteed, but definitely helpful.
AOE? They shut this down with counterspell or simply focus fire enemy casters down.
How do you shutdown a breath weapon with counterspell? Or another innate AoE attack?
BBEG fights the Abjurer loads up on Mirror Image, Blink and his Arcane ward. He is IMPOSSIBLE to hit.
He is not impossible to hit. Dragon closes his eyes and ignores
Mirror Image. Dragon will rip through arcane ward super quickly.
Blink is random. It depends on if he makes the roll. At the end of the day, the dragon can simply fly away until your duration runs out. You wasted a 2nd and 3rd level slot.
Bard and Cleric will usually hang back and help each other with cutting words/warding flare. They usually buff then find full cover to hide behind and pop in and out as required.
Bard took shield as part of his magical secrets.
You still low level aren't you? Dragons have a +11 to hit. Maybe you have better magic items or dex than I do, my AC
mage armor and dex is 15. It goes up to 20 with
shield. +11 to hit cracks on that AC quite easily. In fact, most stuff hits me pretty easily at level 10. I'm hoping the staff of power helps that some.
Paladin just gets in there and smashes things in the face.
They are quite tough.
And also so people know, I use custom monsters that do MORE damage than their MM counterparts. Vampires with bows that do an extra 6D6 necrotic with melee strikes, just recently used a CR15 Banshee that hit for 15d10.
I know that I could kill almost any party with a well played dragon with them having a minimal chance of beating it. Other creatures, not so much.