This is a deal worth adding to your cart for collectors and players alike
The fact the familiar even lets you return it to your hand to then play the adventure makes it even more exciting, meaning you dont have to worry about whether to cast it or hold it for later
As with other full art cards, these work the same as the regular Trainer Supporter cards but are much, much prettier
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You can use it immediately as a removal spell, and many times, the activated ability will be relevant, especially against Commander staples like Swiftfoot Boots
The problem is a lot of these also give the draw to other players, putting you somewhat on a timer