Exiling things is always nice, and making your opponent recast them does give you some nice tempo
It was exclusively used for Pokdex entries from then all the way up to Steam Siege, the last set of the XY era before the release of Sun & Moon in 2017
As Pack Tactics grants a lore per damaged character, and only a single point of damage is required to benefit from each character, it offers up some huge potential in decks that look to dish out a lot of damage - and works very well against decks that favour putting a lot of cards on the field
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It was the last spell I cast in my winning games more than any other
Like Ancient Gear Golem, it also stops opponents from activating spells and traps until after the damage step