easy coins
The easiest way to get coins in coin battle is by making a custom stage with spikes on the bottom. Then in Items, turn off all items except for final smash.
Next choose bowser and play on the costum stage with the spikes. Get a final smash and turn to Giga Bowser and stand on the spikes. While Giga Bowser gains Damage, you gain the coins Giga Bowser releases.
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