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All Slivers have "Sacrifice this permanent: Add {B}{B}."
Abilities, attacks, weakness & resistance
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Basal Sliver (SLD-629 foil) is a Rare Creature — Sliver from the Secret Lair Drop series. Its static ability grants all Slivers the activated ability “Sacrifice this permanent: Add {B}{B},” letting your Slivers become a repeatable mana source at the cost of losing permanents. As a two-power, two-toughness three-mana black Sliver, it functions as both an early board presence and a support piece in tribal Sliver decks.
Catalog pricing data as of 20 Apr 2026, 11:28