The description says he used around 13,000 blocks.
i have no clue how the wavy landscape effect was done though.
(
Turboesprit Volume knob, Mon 23 May 2016, 23:20,
Reply)
Shaders
Specifically the Acid Shader
www.pcgamesn.com/minecraft/minecraft-shaders-best-graphics-mods
(
evil_andy Stick stick stick stick sticky sticky stick stick, Tue 24 May 2016, 12:55,
Reply)