bought this today (germany but should work for complete euro aswell)
its an amazing offer from amazone underground

you can also buy only packs or whatever
can try to explain how it works
so for my 50 euros i got

pre order 50 packs + all 3 heroes + 2 packs + 1x arena

This post was edited by EviiL on Apr 6 2016 07:06am

Didn't happen for NA >.<

yeah it was an offer through the amazon underground app
when you pay with amazon coins

you got 15% off by purchasing coins and additional 25% off for each hearthstone transaction