Inspired -- Whenever King Macar, the Gold-Cursed becomes untapped, you may exile target creature. If you do, create a Gold token. (It's an artifact with "Sacrifice this artifact: Add one mana of any color.")
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3
{4}{B}{B}
Nettlevine Blight
Enchantment - Aura
Enchant creature or land
Enchanted permanent has "At the beginning of your end step, sacrifice this permanent and attach Nettlevine Blight to a creature or land you control."
{5}{B}
Wound Reflection
Enchantment
At the beginning of each end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)