Datapacks

Vanilla³

Tempest - Hold a trident with this enchantment to make it rain. 1/125 chance for a drowned to spawn with a tempest trident. 7% + 1% per looting level chance to drop on death.

Levitation - Shift with this enchantment to make yourself float upwards. 1/100 chance for a pigman to spawn with levitation boots. 66% Leather, 20% gold, 11% iron, 3% diamond. 1% + 0.5% per looting level chance to drop on death.

End Above Overworld - Players that reach y:500 in the overworld will be teleported to the end at y:-30. Players that reach y:-40 in the end will be teleported to y:450 in the overworld. Items that reach y:0 in the end will be teleported to y:450 in the overworld.

Sleep System - Sleeping requires 40% of the current online players to sleep to pass the night.

Anti-Enderman Grief - Enderman can't pick up blocks.

Double Shulker Shells - Shulkers always drop 2 shells.

Mob Heads - Small chance for mobs to drop their heads when killed by a player.

And a few statistics/tracking datapacks.