Creature Creation Guidelines

The following is intended to be a companion piece to the Building Creatures guidelines featured in GM Core. This page is intended to be used for Proficiency Without Level - elements of creature building that do not relate to the various modifiers of a creature, such as damage rolls, should be referenced from the GM Core guidelines.

Creature Building Guidelines, minus Level

Perception

Perception Modifier (d20 + modifier below)

Level	Extreme	High	Moderate	Low	Terrible
-1	10	9	6	3	1
0	10	9	6	3	1
1	10	9	6	3	1
2	10	9	6	3	1
3	11	9	6	3	1
4	11	10	7	4	2
5	12	10	7	4	2
6	12	11	8	5	2
7	13	11	8	5	3
8	13	11	8	5	3
9	14	12	9	6	3
10	14	12	9	6	4
11	15	13	10	7	4
12	15	13	10	7	4
13	16	13	10	7	5
14	16	14	11	8	5
15	17	14	11	8	5
16	17	14	12	9	6
17	18	15	12	9	6
18	18	15	12	9	6
19	19	16	13	10	7
20	19	16	13	10	7
21	20	17	14	11	7
22	21	17	14	11	8
23	21	17	14	11	8
24	22	18	14	12	8

Skills

Skill Modifier (d20 + modifier below)

Level	Extreme	High	Moderate	Low
-1	9	6	5	3 to 2
0	9	6	5	3 to 2
1	9	6	5	3 to 2
2	9	6	5	3 to 2
3	10	7	6	4 to 2
4	11	8	6	4 to 3
5	11	8	7	5 to 3
6	12	9	7	5 to 3
7	13	10	8	6 to 4
8	13	10	8	6 to 4
9	14	11	9	7 to 4
10	15	12	9	7 to 5
11	15	12	10	8 to 5
12	16	13	10	8 to 5
13	17	14	11	9 to 6
14	17	14	11	9 to 6
15	18	15	12	10 to 6
16	19	16	13	10 to 7
17	19	16	13	11 to 7
18	20	17	13	11 to 7
19	21	18	14	12 to 8
20	21	18	14	12 to 8
21	22	19	15	13 to 8
22	23	20	15	13 to 9
23	23	20	15	13 to 9
24	24	21	16	14 to 9

AC

AC

Level	Extreme	High	Moderate	Low
-1	19	16	15	13
0	19	16	15	13
1	18	15	14	12
2	19	16	15	13
3	19	16	15	13
4	20	17	16	14
5	20	17	16	14
6	21	18	17	15
7	21	18	17	15
8	22	19	18	16
9	22	19	18	16
10	23	20	19	17
11	23	20	19	17
12	24	21	20	18
13	24	21	20	18
14	25	22	21	19
15	25	22	21	19
16	26	23	22	20
17	26	23	22	20
18	27	24	23	21
19	27	24	23	21
20	28	25	24	22
21	28	25	24	22
22	29	26	25	23
23	29	26	25	23
24	30	27	26	24

Saving Throws

Saving Throws Modifier (d20 + modifier below)

Level	Extreme	High	Moderate	Low	Terrible
-1	10	9	6	3	1
0	10	9	6	3	1
1	10	9	6	3	1
2	10	9	6	3	1
3	11	9	6	3	1
4	11	10	7	4	2
5	12	10	7	4	2
6	12	11	8	5	2
7	13	11	8	5	3
8	13	11	8	5	3
9	14	12	9	6	3
10	14	12	9	6	4
11	15	13	10	7	4
12	15	13	10	7	4
13	16	13	10	7	5
14	16	14	11	8	5
15	17	14	11	8	5
16	17	14	12	9	6
17	18	15	12	9	6
18	18	15	12	9	6
19	19	16	13	10	7
20	19	16	13	10	7
21	20	17	14	11	7
22	21	17	14	11	8
23	21	17	14	11	8
24	22	18	14	12	8

Strike

To-hit modifier (d20 + modifier below)

Level	Extreme	High	Moderate	Low
-1	10	8	6	4
0	10	8	6	4
1	10	8	6	4
2	11	9	7	5
3	11	9	7	5
4	12	10	8	5
5	12	10	8	6
6	13	11	9	6
7	13	11	9	6
8	14	12	10	7
9	14	12	10	7
10	15	13	11	7
11	16	13	11	8
12	16	14	12	8
13	16	14	12	8
14	17	15	13	9
15	17	15	13	9
16	18	16	14	9
17	18	16	14	10
18	19	17	15	10
19	19	17	15	10
20	20	18	16	11
21	20	18	16	11
22	21	19	17	11
23	21	19	17	12
24	22	20	18	13

Spell DC and Spell Attack

Spell DC and Spell Attack Modifer

Level	Extreme DC	Extreme Spell Attack Bonus	High DC	High Spell Attack Bonus	Moderate DC	Moderate Spell Attack Bonus
-1	20	12	17	9	14	6
0	19	11	16	8	13	5
1	19	11	16	8	13	5
2	20	12	16	8	13	5
3	20	12	17	9	14	6
4	21	13	17	9	14	6
5	21	13	17	9	14	6
6	21	13	18	10	15	7
7	22	14	18	10	15	7
8	22	14	18	10	15	7
9	23	15	19	11	16	8
10	23	15	19	11	16	8
11	23	15	19	11	16	8
12	24	16	20	12	17	9
13	24	16	20	12	17	9
14	25	17	20	12	17	9
15	25	17	21	13	18	10
16	25	17	21	13	18	10
17	26	18	21	13	18	10
18	26	18	22	14	19	11
19	27	19	22	14	19	11
20	27	19	22	14	19	11
21	27	19	23	15	20	12
22	28	20	23	15	20	12
23	28	20	23	15	20	12
24	28	20	24	16	21	13