With the 5.05 changes to Divination's CD and potency, I'm assuming its better to just use on CD rather than hold and wait for the three-seal combo? At 120s compared to 180s, you only get 4 draws per Divination, so a smaller window of opportunity for the three-seal combo; add to that the difference between 4% and 6% is fairly small over the course of a fight, pushing the buff an additional 30s to possible get an additional 1% bonus seems a poor trade off.

Any input from those who might be more numbers savvy?

Also, with this change where does Minor Arcana stand? Since you must have three seals in order to use Divination, you only have the potential opportunity to Arcana a single draw (outside of Sleeve Draw, of course) within a single Divination window.