Seems rather lackluster tbh. Compared to Promise of Power, this doesn't scale that well IMO, + to draw a card and lose 1 life, and Promise can also do another effect or both of those effects at the same time with entwine. Promise draws one card more than Tidings does. Though it's also more color intensive than this Deal or Tidings. The point is, I could see a sorcery that drew six cards...

On the other hand, Overflowing Insight was printed as a mythic of all things.

(Matching) Sixes is a nice touch for 'diabolic' flavor, which also justifies the use of a peculiar number as far as drawing cards go.

"Draw six cards" is somewhat of an anomaly. I recall quite well commenting on some card that drew exactly six cards on MTG Salvation some years ago... Found it.

Anyway, this is... okay. Seems like good core set material.

Fun fact: If you follow the link Tahazzar provides and check their comments on Never Before, you'll find out they think something that exists twice is somehow nonexistent.

The theme of six is obviously more justified here, which is a nice touch.