As one can see, Gambler is CLEARLY for farming coins, getting exp orbs, and getting GOLD boxes. Use this in Gold Ships and places where it's hard to get Gold Boxes. Lining up Gold Boxes is a pretty low probability so use up all your kicks. If you have Gambler, bring them and a friend so you can work farming wonders.
Gold Ticket Slot, (slot varies)
Nothing (X) ("Oh my God!!"): Throws its slot machine for 200% of its attack. Though it may go far, the ally throws in a low arch, making the attack inaccurate and unreliable.
EXP Orbs ("Fever"): All 4 types of orbs can be rolled. The amount increases (up to 10).
Gain coins, value increases up to 2 million.
Gain gold chests. They contain items related to the area you are playing in. Sometimes rolling this in certain areas will give you more coins. Increases up to 10 chests.
Gives you a replay and doubles the amount of the reward you roll. You will always get a reward 100% of the time. In some events the rate of rolling this reward increases.