Each of them is worth pennies and every one of them will help you in your quest for card advantage
Other consistency tools include "Heart of the Blue-Eyes", which searches "Ankh" and has a GY effect to send a high ATK/Level monster to GY, and "Wedju Temple", which places a monster from hand to the S/T Zone to place a "Millennium" monster to the S/T Zone
It turns out I was looking at it all wrong
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I could see a world where Tron starts to stretch for white mana at some point, as Krark-Clan Ironworks is both a scary matchup and a rising force in Modern, and Rest in Peace sounds like a powerful tool there, but I dont think were quite at that point yet
From the Legendary Collection 2 set