You want to get him into bubble mode as quickly as possible because his Bodyblow attack in the first two forms deals ~80 damage and this is not the kind of battle where you want to deal with reviving and loss of Sadness. Bubble mode is much more safe and predictable. Wanna know why that spell didn't kill the bubble? Because it has 40 HP.
Most battles from now on will have the regular battle theme because it's better to just avoid the copyright issue.
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