There are so many super fair white decks out there that arent heavily invested in flickering or reanimating things, but this remains an incredibly powerful strategy for decks in all colors
Put another way, thats 24 Food
Again, it's not card advantage in and of itself (since you draw three, and then discard three + lose the Coliseum), but it combines famously with Deep Analysis and madness cards (such as Circular Logic), and its effect can't be counterspelled
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In the TCG, it usually deals high direct damage against the opposing Active Pokemon but has the secondary effect of hurting all of one's own benched pokemon for a relatively low amount (most often 20 HP)