Plane-dependent Critical Roll Outcomes (5e Variant Rule)

The Goal

To better immerse players in extraplanar travel by changing the outcome of their critical rolls to better fit the environment - as if the strings of fate run different here.

The Critical Roll(s) Effected and the Effect had on them is dependent on the plane you travel. When rolling a critical fail in a Lawful Good plane, for instance, the outcomes of that roll would be far less negative for the players than if they were under the influence of, say, the Nine Hells, an evil plane, which may only see an increase in negativity from critical fail outcomes or perhaps even negated critical success powers. See Planar Mechanics for specific plane's effects on these rolls.

General Mechanics

There is no math-based rule but

Planar Mechanics

Key

Symbol	Meaning	Symbol	Meaning
(+)	Positive	(o)	Neutral
(-)	Negative	(+/-)	Both
G	Good	N	Neutral
E	Evil	n	Neither
C	Chaotic	~~	Slightly
L	Lawful	^^	Very
[^]	Enhanced	[ ]	No effect
[v]	Diminished	Example	Example
Example	Example	Example	Example
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Plane	Shell	Alignment	Energy	Crit Success Effect	Crit Fail Effect
Prime	Inner	Neutral	Neutral	Normal	Normal
Shadowfell	Inner	Neutral	Slightly Negative	Slightly Diminshed	Normal
Feywild	Inner	Neutral	Slightly Chaotic	Slightly Enhanced (optional)	Normal
Elemental Chaos	Inner	Chaotic	Enhanced	Enhanced	Enhanced
Ethereal Plane	Inner	--	--	Normal	Normal
Astral Plane	Outer	--	--	Normal	Normal
Mechanus	Outer	Lawful Neutral	--	Diminished	Diminshed
Archadia	Example	Example	Example	Example	Example
Mount Celestia	Example	Example	Example	Example	Example
Bytopia	Example	Example	Example	Example	Example
Elysium	Example	Example	Example	Example	Example
Example	Example	Example	Example	Example	Example
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Limbo	Outer	Chaotic Neutral	--	Diminshed	Enhanced
Example	Example	Example	Example	Example	Example
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