Hello!
Pocketmine doesn't support spawnable mobs at this time
You can get items such as lava buckets and water buckets with the unban items plugin
For /give do this:
/give <playername> <item name / id> <amount>
Example:
/give Mrcreeperman246 diamond 1
Here is what i came up with!
Dependencies: Mad commands + Auto Command
Mad commands:
/cmd create autolaggclear
/cmd add autolaggclear message onlineplayers() §o§c§l[§4!§c] Warning: Ground items are about to be cleared!
/cmd add autolaggclear sleep 30
/cmd add autolaggclear asop /lagg clear...