Your search for "Beacon of Immortality 6" revealed the following:
Beacon of Immortality (5DN) from Fifth Dawn, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:Double target player’s life total. Shuffle Beacon of Immortality into its owner’s library.
Beacon of Immortality (10E) from Tenth Edition, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:Double target player's life total. Shuffle Beacon of Immortality into its owner's library.
Beacon of Immortality (E02) from Explorers of Ixalan, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:Double target player's life total.Shuffle Beacon of Immortality into its owner's library.
Beacon of Immortality - E02 Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:Double target player's life total.Shuffle Beacon of Immortality into its owner's library.
Beacon of Immortality (Foil) (5DN) from Fifth Dawn, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Rob Alexander Card Text:Double target player’s life total. Shuffle Beacon of Immortality into its owner’s library.
Beacon of Immortality (Foil) (10E) from Tenth Edition, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Rob Alexander Card Text:Double target player's life total. Shuffle Beacon of Immortality into its owner's library.