Armor of invulnerabilty = 10 minutes = 60 rounds

1
(d20+9)[10]
(1d8+5)[12]

(d20+4)[11]
(1d6+15)[19]

2
(d20+9)[20]
(1d8+5)[8]

(d20+5)[15]
(1d6+15)[20]

3
(d20+9)[23]
(1d8+5)[10]

(d20+5)[18]
(1d6+15)[16]

4
(d20+9)[17]
(1d8+5)[10]

(d20+5)[11]
(1d6+15)[18]

5
(d20+9)[10]
(1d8+5)[12]

(d20+5)[22]
(1d6+15)[16]

6
(d20+9)[28]
(1d8+5)[13]

(d20+5)[21]
(1d6+15)[17]

7
(d20+9)[25]
(1d8+5)[8]

(d20+5)[12]
(1d6+15)[16]

8
(d20+9)[28]
(1d8+5)[10]

(d20+5)[23]
(1d6+15)[21]

9
(d20+9)[17]
(1d8+5)[7]

(d20+5)[16]
(1d6+15)[21]

10
(d20+9)[20]
(1d8+5)[6]

(d20+4)[18]
(1d6+15)[17]