Minecraft Bedrock and Java dev. can make everything you request!
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Death graves for Paper servers: items and XP wait safely in a locked grave instead of spilling on the ground.
Minecraft, but the rules change every few minutes: eight random rules and a boss bar timer for Paper servers.
A complete Lifesteal datapack: kill a player to steal a heart, lose them all and you're out until a friend revives you.
Break one log with an axe and the whole tree comes down. Leaves clear, drops pile up at the stump and a new sapling goes in.
Six ruined dig sites across new Java worlds. Brush suspicious sand and gravel, open the buried chest and collect all six.