Most surprising, the LoE Rare Class Cards will each be seen in about 55% of Drafts.
The new LoE Class Commons will each be seen in about 71% of Drafts.
The LoE Legendaries (Reno, Elise, etc.) will each show up in about 1% of Drafts.
The LoE Neutral Epics (Djinni of Zephyrs and Naga Sea Witch) will each show up in 8% of Drafts.
And finally, LoE Neutral Commons (Jeweled Scarab, etc.) will each show up in about 39% of Drafts.