Thanks for sharing
Like most Magic: The Gathering cards, the value of Energy Tap depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Fourth Edition Foreign Black Border)
During the defense I can mill my opponent's deck using Breaking , Maddening Cacophony , Glimpse the Unthinkable and mostly with Mind Funeral
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The safe bets for this set are the reprints: Fetchlands,
The value of X is calculated only once, as The Wandering Minstrel's last ability resolves
