Hi.
Make a distributor in dragon city for boost dragons.
Tomato juice, Red beer, chili.
Buy Tomato juice with : 150 000 gold, boost your dragon 20% producer gold and add 1000 pv & 400 attack damage for 1 hour.
Buy Red beer with : 500 000 gold, boost your dragon 40% producer gold and add 2000 pv & 1200 attack damage for 1 hour.
Buy Chili with : 5-10 Million gold or 3 gems, boost your dragon 100% producer gold and add 6000 pv & 3000 attack damage for 1 hour.