A lightweight data-pack for 1.17 that well, makes the void rise. Lag is handled well with falling blocks being killed to avoid sand blocks causing lag upon rising.

CURRENTLY INCOMPATIBLE WITH 1.18's -64 CAVE SPAWNING HEIGHT. Support will not be given until an eventual rewrite is done (long overdue).

Many of the code is old and may not be fully stable, a future update will be released to fix all of this soon. I would recommend Lava Rising or Water Rising for events like this for now.

Once installed, teleport to 0 0 (x and z), then run
function voidrising:prepare
This will ensure all functions are setup and ready to go. When you're ready run
function voidrising:start

Each player has one life and is placed into spectator mode once they're dead.

If you want to configure timings, change the values of warning_time and rising_time in the time scoreboard. These options are measured in ticks (1 second = 20 ticks)

For example, to make the intervals 10 seconds:
scoreboard players set rising_time time 200
and the warning every 8 seconds:
scoreboard players set warning_time 160
Also, shoutout to @JacobCPG for using my datapack in a stream & video :)
Go watch here: https://www.youtube.com/watch?v=l2XcCwgzDfo https://www.twitch.tv/videos/982599654

Shoutouts to @arnasmeskys for using my datapack in a video !*&(*"$(*£"
Go watch here: https://youtu.be/JwDbJ8JPnPc


More info available @ plexion.dev (my website)