Given I can only summon them 60' away from me each is going to provoke from the Barometz getting into position. Those going to the sides and behind the Mosslord will also provoke. They are incorporeal so the plants may not be able to harm them. Each Dream attacks the Mosslord, these are touch attacks. Each readies and attacks when its flanking partner gets into position.
Creepy Touch 1: 1d20 + 16 + 2 ⇒ (7) + 16 + 2 = 25
Damage: 6d8 ⇒ (3, 2, 7, 5, 6, 8) = 31 negative energy
Creepy Touch 2: 1d20 + 16 + 2 ⇒ (9) + 16 + 2 = 27
Damage: 6d8 ⇒ (3, 3, 3, 8, 8, 4) = 29 negative energy
Creepy Touch 3: 1d20 + 16 + 2 ⇒ (15) + 16 + 2 = 33
Damage: 6d8 ⇒ (6, 4, 5, 7, 6, 3) = 31 negative energy
Creepy Touch 4: 1d20 + 16 + 2 ⇒ (18) + 16 + 2 = 36
Damage: 6d8 ⇒ (8, 5, 6, 1, 5, 8) = 33 negative energy
Creepy Touch 5: 1d20 + 16 + 2 ⇒ (3) + 16 + 2 = 21
Damage: 6d8 ⇒ (4, 4, 8, 1, 4, 8) = 29 negative energy
Creepy Touch 6: 1d20 + 16 + 2 ⇒ (14) + 16 + 2 = 32
Damage: 6d8 ⇒ (4, 6, 6, 7, 8, 2) = 33 negative energy
Assuming they all hit its flat footed touch AC that looks like 186 damage. As they do negative energy damage it should not be subject to DR.
Assuming at least one hits then it needs to make a DC21 will save or become cursed, taking 1d4 ⇒ 2 wisdom drain and becoming fatigued. they only have to do so once due to this limitation of expanded summon monster
Monster Summoner's Handboo wrote:
When these alternative monsters are summoned, they do not always possess the full power typical of creatures of their kind. Most have weaker versions of abilities that are normally usable at will. If a summoned creature from these lists possesses an ability that both is usable an unlimited number of times per day and requires a saving throw, a creature that attempts a saving throw against the ability becomes immune to that ability for 24 hours. This immunity also applies to that ability possessed by all other creatures of the same kind summoned by the same spellcaster
I have alwys assumed this only applies to each individual use of a summon spell
