Potion Tables

I always found it a pain to have to keep digging out the DMG to look up the effects of potions, so in the mid-1980’s I re-typed some tables using a typewriter. Now days, with word processors and the web it’s a lot easier. In this post I’ve provided a number of potion effects tables for easy reference.

Note: The following tables are not guaranteed to be exactly what is in the AD&D Dungeon Masters Guide. I used a mixture of the DMG and OSRIC, and adjusted a few things here-n-there to fit my own prejudices.

Admixture of Potions
Animal Control
Climbing
Dragon Control
Giant Control
Giant Strength
Heroism and Dweomercraft
Humanoid Control
Undead Control


Admixture of Potions

Looking up the potion miscibility table has always been a pain, as the DMG is disorganized and I could not remember where the table was located. Having the table handy can make for fun times.

This table covers 2 scenarios:

  • Drinking 2 potions at the same time
  • Mixing 2 potions externally, like in a crock

I have no idea why anyone would mix potions instead of drinking them, but it apparently came up in EGG’s original campaigns.

Neither the DMG nor OSRIC list the time frame in which potion miscibility should be checked. I ruled that if one potion was consumed while a previous one was still in effect, miscibility should be checked. I also rule if a potion is cancelled, it’s duration should be rolled and tracked, as the potion is still in the imbiber’s system, so other potions consumed during this time may need to be checked as well, possibly against both of the first consumed potions if both durations are in effect.

Common sense has to be used with this table, e.g., if Growth and Diminution both work, they cancel each other out. Also, I may not check if more than one potion of the same general type is consumed, e.g., Potion of Healing and Potion of Extra Healing.

Note: The following table is mostly from OSRIC, as the descriptions are generally easier to understand than the DMG. However, I cleaned up wording and made a few changes. See Admixture of Potions in OSRIC to check the differences.

d00 Result

01

Eldritch blast! A catastrophic release of magical energies inflicts 6d10 points of internal damage and 1d10 points of damage to anyone with 10 ft of the imbiber. If mixed externally, all persons within 10 ft of the epicenter of the blast take 4d6 points of damage, no save.

02-03

Poison, causing instant death if mixed internally, no save. External admixture creates a poisonous cloud 10 ft in radius. Anyone within the cloud must save versus poison or die.

04-07

A strange brew results and imbiber sickens, losing 1d4 each strength and dexterity for 4d6 rounds, no saving throw. One potion is nulliļ¬ed and the other works at 50% strength and duration.

08-12

The potions cancel each other out; neither has any effect.

13-20

One potion is cancelled and the other works at 50% strength and duration.

21-30

Both potions work but only at 50% strength and duration.

31-90

Successful admixture: both potions work normally.

91-99

Extraordinary success: one potion works at 150% strength and duration while the other has normal effects.

00

Spectacular success! One of the imbibed potions, determined randomly, has bestowed its effect permanently. Of course, this may not always be a good thing! Consider, for instance, a permanent Potion of Gaseous Form effect.

Note: Unless there is a visible effect such as an explosion or poisonous gas, the players will not know the result of an external admixture. However, keep track of the result and use it if any character consumes the potion.


Animal Control

d20 Result

1-4

Avian

5-7

Fish

8-11

Mammal, including marsupial

12-13

Any mammal and avian

14-17

Amphibians and reptiles

18-19

Amphibians, reptiles, and fish

20

All listed above

The following general sizes and quantities apply: wolf size or smaller, 5d4; up to human size, 3d4; animals up to 1,000 lbs, 1d4.


Climbing

Penalty Description

-1%

each 1,000 GPW carried

-1%

Any type of magical armour

-1%

Studded leather

-2%

Ring mail

-4%

Scale mail

-7%

Chain mail

-8%

Banded and splinted armour

-10%

Plate mail


Dragon Control

d20 Result

1-2

black dragon

3-4

blue dragon

5-6

brass dragon

7

bronze dragon

8-9

copper dragon

10

gold dragon

11-13

green dragon

14

red dragon

15

silver dragon

16-17

white dragon

18-19

all evil dragons (black, blue, green, red, white)

20

all good dragons (brass, bronze, copper, gold, silver)


Giant Control

d20 Result

1-2

cloud giant

3-6

fire giant

7-10

frost giant

11-15

hill giant

16-19

stone giant

20

storm giant


Giant Strength

d20 Giant Strength Melee Dmg Wt Allow. Range mod Rock Dmg BB/LG

1-6

Hill

+1d8

+4,500

+780 ft

1d6

50%

7-10

Stone

+1d10

+5,000

+8,160 ft

1d12

60%

11-14

Frost

+1d12

+6,000

+9,100 ft

1d8

70%

15-17

Fire

+2d6

+7,500

+10,120 ft

1d8

80%

18-19

Cloud

+2d8

+9,000

+11,140 ft

1d10

90%

20

Storm

+2d10

+12,000

+12,160 ft

1d12

99%


Heroism and Dweomercraft Potion Effects

Heroism

Super-Heroism

Ultra-Heroism

Fighter Level

Levels Added

Extra HD

Levels Added

Extra HD

Levels Added

Extra HD

0

4

4

6

5

7

6

1-3

3

3+1

5

4+1

6

5+1

4-6

2

2+2

4

3+2

5

4+2

7-9

1

1+3

3

2+3

4

3+3

10-12

2

1+4

3

2+4

13+

2

1+5

Note that the Dweomercraft potions grant levels to spell using classes. These levels grant additional hit points (d4s for magic users, d8’s for clerics), additional levels for spell effects and saving throws, but not affect combat ability. Even clerics of war gods gain no extra combat ability from these potions.


Humanoid Control

d20 Result

1-2

dwarfs

3-4

elves and half-elves

5

elves, half-elves, humans

6-7

gnomes

8-9

halflings

10-11

half-orcs

12-17

humans

18-20

other humanoids (orcs, gnolls, goblins, etc.)


Undead Control

d10 Result

1

Ghasts

2

Ghosts

3

Ghouls

4

Shadows

5

Skeletons

6

Spectres

7

Vampires

8

Wights

9

Wraiths

0

Zombies


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