ooc: sorry about the delay, work has been active.
Rose steps into the first, now empty room. She isn't happy to be trapped in a hall of infinite fights, but when in rome. (1d20+2)[18]
Spoiler: When her turn comes
Show
She uses a move action to approach the naga.
She uses a bonus action to activate tunnel fighting and no longer needs to spend a reaction to make attacks of opportunity.
She takes an attack action on the naga. Using reckless assault
(1d20+8)[18] or (1d20+8)[18] damage is (2d8+7)[19] + (1d6)[1] necrotic
(1d20+8)[24] or (1d20+8)[14] damage is (2d8+7)[17] + (1d6)[2] necrotic
(1d20+8)[9] or (1d20+8)[28] damage is (2d8+7)[11] + (1d6)[4] necrotic
Of note two things. 1: if the lower of the two rolls would also hit the fell handed feat the target is knocked prone. 2: crit range is 19-20 and a crit also does 17 extra damage from the Devastating Critical ability on the brute.
Feel free to roll and AoO's using the math above.
edit: Spoiler: Condition
Show
wielding a magic axe and shield
Hp: 286
ac: 18
Currently Affected by: