In my book, licensed non-TCG cards are not Pokemon cards. smpratte March 9, 2025, 7:39pm 12 What @dyl is highlighting is the general consensus
Its another handy recursion piece to give your deck some resiliency
Generally I will let the artist use their own pen for signing but there are situations where you might want to suggest using your own

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Loxi: You probably only want this in decks that have a bit of control over the X cost here, but it's a nice way to filter your hand and grow your board