Reproduce the drafting experience of Bloomburrow.
The cube was built as five coloured packs and one rainbow pack each containing 15 cards. Here are their general composition:
A pack of fifteen mana-fixing cards has also been included. Do not mix in the Thriving lands during the draft phase. Instead, at the end of the draft phase, each player is present with all five colours of Thriving lands. They can pick two out of those five.
Mix in the five cards that aren't Thriving lands.
Useful links:
Added white cards.