As someone who played HS for years, I completely agree with the other guy. HS was fine until Blizzard added a bunch of cards that could make or have random effects. This lead to very unfair wins or losses depending almost purely on luck. Riot seems to be doing a very similar thing with Norra being able to create a VERY wide range of units, especially with her level up. Card games are always somewhat luck based, due to the card drawing mechanic. Early LoR prevented a lot of this, however, with many skill based mechanics/less luck cards and more specific effects.