ARS slabs are highly prized for their aesthetics (with the label often on the back and an elegant design)
Jafar's taken over

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Meanwhile, for three Colourless Energy, Mew can instead use Genome Hacking , allowing you to choose one of the moves on your opponents Active Pokemon and use it for yourself
In a way, this land doubles as both a mana accelerant and a way of protecting your game-winning card from hand disruption