Algo medio bonito

#include <amxmodx>
#include <engine>

#define PLUGIN "Nuevo Plugin"
#define VERSION "1.0"
#define AUTHOR "Sugisaki"

new Float:fTime[33]

public plugin_init()
{
    register_plugin(PLUGIN, VERSION, AUTHOR)
    register_clcmd("invisible", "fw_buy_invisible")
}
public client_PostThink(id)
{
    if(!is_user_connected(id)) return

    if(halflife_time() >= fTime[id])
        set_entity_visibility(id)
    else
        set_entity_visibility(id, 0)
}
public fw_buy_invisible(id)
{
    fTime[id] = halflife_time() + 10.0
}