The market has corrected itself since then to what is probably a more accurate level
Nevertheless, its important that you try to get as many cards as you can since this feeds directly into the crafting system

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But with proliferate, you could accelerate the process by adding quest counters, making a same-turn activation possible
They were beloved -- more beloved than perhaps any other trading card in history -- but they were not protected
If this card is sent to the GY as Synchro Material: You can return 1 card your opponent controls to the hand