У вашего броузера проблема в совместимости с HTML5
Sorry for poor quality shadowplay does not record this.
This is on minecraft version 1.7.10
MOD: Ars magica 2 1.7.10 beta
I was messing around with some mods in creative for shits and giggles yea this spell was born. On the final demonstration my game lagged EXTREMELY bad so it is not your end this really happened. kind of surprised it didn't crash
You can try to use it on a server but the server might either crash, lag you out, lag or keep it self in one piece.