A Pokmon card is: Narrower than the sticky note Half an inch taller Rectangular instead of square This makes a sticky note a helpful mental reference
Hopefully, that example gave a basic sense of what you should be thinking about when building a mana base
The fact that this difference exists at all, however, is absolutely wild and seemingly nonsensical
With Battle Mania active, your opponent can't simply skip their Battle Phases before they attack with everything they have, forcing them to take all the damage through battling

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