Some simple translations:
According to the new regulations, we announce here the chances of getting rare drops from TI 7 compendium on PW server:
The chance of receiving regular drops is even.
The chances of receiving rare items increase with each treasure opened and
are accumulated will continue accumulating.
- Rare: 1/4 chance when 10 treasures have been opened.
- Very rare: 1/7 chance when 10 treasures have been opened.
- Extremely Rare: 1/30 when 15 treasures been opened.
Rylai’s Battle Blessing
- Sets: 70%.
- Couriers: 7.5%.
- Announcer Packs: 3%.
- Immortal Treasures: 0.5%.
- Arcana: 0.1%.
And the record of lottery is again published here.
This information is directly copied from Reddit.