Licensing Edit• (This is my first publication, I didnt find how to insert pictures and you can modifie it !).
The 2015 Haloween quest need to collecting 20 pumpking during battles.
During this battle you have to summon on the field the Marcelin' card.
After the battle you will receive a pumking, collect 20 and Marcelyne will give you a new special card.
• I don't know how the quest pop' but it look's like to get one for each field.Currently I got 2 and I get a special "new" card with "%" in algebric chest (the orange).