Potion Explosion: The 6th Student

Yes, but only in an empty layer or one that already contains Mandragora Leaves; once a layer has a Leaf, you can’t add other colors to it, and you can’t change a Leaf’s color with a Potion effect. (p. 3)

No. Treat them as a separate color when picking: they explode only when they collide with other Mandragora Leaves. (p. 3)

During setup Step 7, remove 5 regular marbles of each color and 10 Mandragora Leaves; mix the remaining marbles together and load them into the Dispenser. (p. 2)

Take marbles only from the Dispenser with the Bell tile (the Pick Dispenser), and put discarded marbles only into the one without it (the Discard Dispenser). (pp. 5–6)

At the start of each turn, count tracks with at least 9 visible marbles in each Dispenser; move the Bell to the Discard Dispenser if it has more full tracks than the Pick Dispenser. Don’t move it on a tie. (p. 5)

Yes. You automatically gain one when you complete your 10th Potion in total, regardless of type, but you don’t gain another for completing 20. (p. 6)