SametHope

Adds a gamerule to share hits taken by players with all other active players. Works on single-player, integrated/LAN servers, and dedicated servers.

Adds /heal command to Minecraft, optionally, targets and heal amount can be specified in any order. Supports single-player, integrated/LAN servers, and dedicated servers.

Adds group-based per-player inventory shuffling with customizable options. Works on both integrated/LAN and dedicated servers, not required on clients.