Hearthstone is having a mech-themed event, during which players have a chance to earn a gold copy of the new Legendary Mech SN1P-SN4P. This neutral card summons two 1/1 Microbots, combining with them to make one big bot.
Players hoping to grab SN1P-SN4P don’t have to try too hard, simply log in any time between June 3 and July 1 and he’s yours. If you somehow manage to miss this month-long event, you will still be able to craft a normal copy for 1600 dust.
To accompany this event, Blizzard has decided to make changes to several of the game’s cards. They’ve selected two Boomsday Project cards for each class and dropped the amount of mana required to play them. The hope is that this will make players want to use them more.
A rundown of which cards have had their mana reduced and by how much can be found in the patch notes on the Hearthstone site.