Combo 1: When opponent has less then 3 monsters in their main monster zones, activate Just desserts, then chain Ojama Trio to give them 3 Ojama Tokens. Just desserts will then resolve its effect conflicting 1500 damage to your opponent. (Plus 500 x whatever monsters they already have.)
Combo 2: While your opponent has many cards on their field, and you have any combination of Just desserts, Ceasefire, Secret Barrel, or Secret Blast set down on your field, activate them all, and then activate Accumulated Fortunes as the 4th (or higher) chain. You'll do insane Burn damage and draw 2 cards.
Combo 3: Set Absolute King Back Jack face down. When he's (or she... it's 2018 I don't judge) destroyed and sent to the graveyard, activate his effect to change the order of the top 3 cards of your deck. You should pick a normal trap to be on top. Then, banish Absolute King Back Jack to excavate the top card of your deck, and since you already know what you'll get, you should have drawn a normal trap, and since it's a normal trap, you can set it face down on your field as soon as the effect resolves. Choose a different trap depending on the situation.
90
450
720
30
