So many dice rolls but already blind.
Slam 1 1d20+12 : 16 + 12, total 28
Slam 1 damage 1d6+10 : 6 + 10, total 16
Rolled 2d6 : 5, 4, total 9
+slow
Slam 2 1d20+12 : 18 + 12, total 30
Slam 2 damage 1d6+10 : 6 + 10, total 16
Rolled 2d6 : 5, 3, total 8
+slow
If the rats are still alive.
Concentration check for celestial bison need an 18 to cast defensively 1d20+9 : 9 + 9, total 18
summoned to flank with the spider
Spider
Bite 1d20+6 : 2 + 6, total 8
Bite damage 1d6+2 : 3 + 2, total 5
Rolled 2d6 : 3, 5, total 8
+poison DC 14
strength poison 1d4 : 2, total 2
Bison
Gore 1d20+12 : 19 + 12, total 31
Gore damage 1d8+11 : 2 + 11, total 13
Rolled 2d6 : 4, 2, total 6