/lightning

Strikes a bolt right now; needs the gamemaster permission. Also available as /mxt lightning ….

• /lightning ...

  • ... [pos] color <six hex digits> [alpha [thickness [damage [visual_only]]]]

    A single-colour bolt: strikes one bolt of that colour at pos.

  • ... [pos] palette <colour,colour,…> [alpha [thickness [damage [visual_only]]]]

    A gradient bolt: the colour runs down the list from the top to the ground.

Without pos the bolt lands at the command executor's feet. Apart from the colour it is a vanilla lightning bolt: damage, ignition, lightning-rod charging, copper oxidation, the thunder and the sky flash, and the lightning transformations (villager to witch, pig to zombified piglin, creeper to charged creeper) all happen as usual.

/mxt lightning
/mxt lightning ~ ~ ~
/mxt lightning ~ ~ ~ color 66CCFF
/mxt lightning ~ ~ ~ color 66CCFF alpha 0.5 thickness 2 damage 10 visual_only
/mxt lightning ~ ~ ~ palette 7A5CFF,66CCFF
/mxt lightning ~ ~ ~ palette 7A5CFF,66CCFF,FF4444 alpha 0.5 visual_only

Arguments

Argument	Default	Description
pos	the executor's position	The landing position; ~ relative coordinates are accepted.
color <six hex digits>	737380 (the vanilla cool white)	Written without #, for example 66CCFF; tab completion offers a few common colours.
palette <colour,colour,…>	none	A gradient: comma-separated six-digit hexadecimal colours, the first at the top (where the bolt starts) and the last at the ground, at most 16 of them; tab completion offers a few presets. Once palette is written, color no longer tints the bolt.
alpha <0..1>	0.3	The bolt's brightness. Vanilla lightning is additive-blended, so the vertex colour's RGB × alpha is its glow strength — it is not an opacity.
thickness <0.1..4>	1	The thickness multiplier of the bolt column.
damage <≥0>	5	The lightning damage.
visual_only	off	Strikes the bolt without damage or ignition, for pure decoration.

color <colour> and palette <gradient> are two alternative branches, and each is followed by the same fixed-order tail [alpha [thickness [damage [visual_only]]]]: to write a later one you must write the earlier ones too (tab completion walks you through whatever is left), so reaching thickness means writing a colour or a gradient and then alpha.

The datapack-side behaviour mxt:spawn_lightning accepts any combination of its fields, with the gradient written as palette; see the entity action types.

Registry ids in the command use the vanilla ResourceArgument, which also answers the parsing, the tab completion and the "no such entry" error; the suggestions come from the server's current registries, so whatever completion offers is usable, because an entry a neoforge:conditions block keeps out never enters the registry. For the arguments that do not take that road, see "Completion" on the commands overview.