Keeping in mind that total cost for Gulled is 13, you can start from original basic Gulled team (2x Red Gulled and 7x Black Gulled) and then do some modifications:
Description: "Earn 1 Gyulla each time battlepiece moves. Must be placed on second line during setup."
W-W-W-W-W
W-W-Y-W-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "Earn 3 Gyullas each time battlepiece moves. Must be placed on first line during setup."
W-W-W-W-W
W-Y-Y-Y-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
These new battlepieces are currently in playtest phase
Description: "Earn 2 Gyullas each time battlepiece moves. After White Gulled is placed into graveyard, if it was taken by a Gulled, replace it by a Grey Gulled under control of opponent. Must be placed on second line during setup."
W-W-W-W-W
W-W-Y-W-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "This battlepiece can't be recruited."
W-W-W-W-W
W-W-Y-W-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "Earn 2 Gyullas each time battlepiece moves. Must be placed on first line during setup."
W-W-W-W-W
W-Y-W-Y-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "Earn 3 Gyullas each time battlepiece moves. Must be placed on first line during setup."
W-W-Y-W-W
W-Y-W-Y-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "Earn 2 Gyullas each time battlepiece moves. Must be placed on second line during setup."
W-W-Y-W-W
W-W-W-Y-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "Earn 3 Gyullas each time battlepiece moves. Must be placed on first line during setup."
W-Y-W-Y-W
W-W-Y-W-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W
Description: "Earn 2 Gyullas each time battlepiece moves. Must be placed on second line during setup."
W-W-Y-W-W
W-Y-W-W-W
W-W-T-W-W
W-W-W-W-W
W-W-W-W-W