I think it is not a bad reward, almost 100 SPS, 2 cl pack, 4x Soulbound summoners and others card in 46 chest.
Every time we can't expect legendary and epic. After three season I able to full a single legendary Kullu mastermind.
Legendary always be legend, so we get occasionally not in every season.
In current season, till now I am trying in modern format and after one week I will start wild format.