Day 1
Rolls
Atk1 - (1D20+5)
(5) + 5 = 10
Dmg1 - (1D6+3)
(2) + 3 = 5
Atk2 - (1D20+5)
(12) + 5 = 17
Dmg2 - (1D6)
(2) = 2
Another Dex Save for the next spider.
Rolls
Eldritch Blast V. Spider 3 - (1d20+6)
(7) + 6 = 13
Eldritch Damage - (1d10+3)
(10) + 3 = 13
Flaming Sphere - (2d6)
(32) = 5
Rolls
Light crossbow attack - (1d20+2)
(14) + 2 = 16
Light crossbow damage - (1d8)
(8) = 8
Spider, covered in soot runs toward Phoenix.
Eldrich blast however seems to be reflected by the thick metal skin (you did not beat AC) and spider move:
Bellow see that the spider "2" who were running his way turns toward Phoenix and charge that way: past you and past Elrond
spiders 3 and 4 moves diagonally by ceiling and down to the walls they are clearly moving towards phoenix and are very close to it by end of the turn. 5 and 6 however makes a a crazy turn - they run directly toward Phoenix by ceiling jumps off and try to hit Phoenix with their Pincers while falling.
They take 2d6 bl. damage on landing due to height. One of them is still but other is damaged but still moves.
Rolls
dex save - (1d20)
(3) = 3
Spider 5 Pincer to hit - (1d20+2)
(7) + 2 = 9
Spider 6 Pincer to hit - (1d20+2)
(5) + 2 = 7
Spider 5 fall damage - (2d6)
(31) = 4
Spider 6 fall damage - (2d6)
(64) = 10
Rolls
Atk - (1D20+5)
(1) + 5 = 6
Weapon dmg plus rage plus divine fury - (1D6+3, 1d6+1)
1D6+3 : (4) + 3 = 7
1d6+1 : (2) + 1 = 3
Rolls
Opp atk - (1D20+5)
(6) + 5 = 11
Dmg - (1D6+3)
(4) + 3 = 7
So 1 and 2 reaches Phoenix, trying to hit it, Elrond's crossbow kills "2" immediately after that
If 15 hits Phoenix he takes 4 piercing damage and 3 more lightning as electrical charge goes off the pincer it bites you with. 7 total damage
Rolls
Spider 1 to hit - (1d20+2)
(13) + 2 = 15
Spider 2 to hit - (1d20+2)
(4) + 2 = 6
Spider 1 damage - (1d4)
(4) = 4
Spiders 6,7,8,9 are 10ft high you can't reach them with melee weapons from the ground. 4 is 5ft and 1,3,5 on the ground
Can't you see that the conflict can be easily avoided?
He points out the spiders movement.
What on earth did I do to get all this aggression?
Phoenix prepares himself for the onslaught and slams the sphere into spider 6.
Rolls
Flaming Sphere - (2d6)
(43) = 7
Elrond thinks to say something, but instead only watches to see if Anguis is right. He stays immediately behind Bellow at the moment. He takes the dodge action
And it is on fire - I assume it takes the same 5 damage from previous roll
Rolls
Spider dex save - (1d20)
(5) = 5
Also spider 3 stops when Angius says "Can't you see ..." and turns to Angius. Other spiders continue toward Phoenix. Only Elrond is still ignored.
Meanwhile flaming sphere bumps into spider 6, but it manages to partially escape fire taking half of the damage
Rolls
Spider 6 dex save - (1d20)
(18) = 18
Rolls
Spider 1 (P) - (1d20+2, 1d20+2)
1d20+2 : (10) + 2 = 12
1d20+2 : (8) + 2 = 10
Spider 5 (P) - (1d20+2, 1d20+2)
1d20+2 : (10) + 2 = 12
1d20+2 : (2) + 2 = 4
Spider 4 (A) - (1d20+2, 1d20+2)
1d20+2 : (17) + 2 = 19
1d20+2 : (3) + 2 = 5
Spider 6 (B) - (1d20+2)
(6) + 2 = 8
Spider 9 (B) - (1d20+2)
(9) + 2 = 11
spider 7 (b) - (1d20+2)
(11) + 2 = 13
spider 8 (b) - (1d20+2)
(18) + 2 = 20
Spider 3 (A) - (1d20+2, 1d20+2)
1d20+2 : (6) + 2 = 8
1d20+2 : (1) + 2 = 3
Good news - you don't see new spiders on ceilings, though you clearly hear something is shimmering there
Rolls
Piercing damage - (1d4)
(2) = 2
Dual axes.
Rolls
Atk1 - (1D20+5)
(7) + 5 = 12
Dmg1 - (1D6+5)
(4) + 5 = 9
Atk2 - (1D20+5)
(12) + 5 = 17
Dmg2 - (1D6+3)
(4) + 3 = 7
Fury dmg bonus to first hit, radiant - (1D6+1)
(3) + 1 = 4
Elrond you see that Bellow keeps crying as he swing his axes. He kills one of the spiders (I assume he aimed the already damaged 6 with the second hand)