Seems related to botania, have tried updating it; but the game kinda breaks (when in windowed mode the game COMPLETELY DISAPPEARS, but appears in fullscreen mode. Also the cursor is in the wrong position)
Crash report: http://pastebin.com/Cg5P8sHA

Fixed: Issue was optifine and I used a set of jvm arguments
https://xealgaming.net/threads/optimising-your-minecraft-jvm-arguments.4758/