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Mmmmm.. its bit hard to explain.
To make it simple.. different raeiry cards has different mining power. 5 for normal 35 for rare 180 for unique 520 for legend. This no means minted nova token next 24 hours. Once 24 hr passed you need ro recharge which cost 1 steem. Of course Nova token price fluctuate and it is about 1Ton = 1800 Nova. So to make it profitable its better have higher rarity cards at least Unique cards. Anyway this is about telegram story. Yes they didn't do rhis process yet but I belive it will happen sponer rhan later. Hope this helps.

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