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'When this creature enters, you may sacrifice another creature. If you do, put two +1/+1 counters on this creature, then scry 2.
'Undergrowth — Distribute X +1/+1 counters among any number of target creatures you control, where X is the number of creature cards in your graveyard as you cast this spell....
'Target opponent sacrifices a creature of their choice. If you control a creature with power 4 or greater, you gain 4 life.
'Undergrowth — Distribute X +1/+1 counters among any number of target creatures you control, where X is the number of creature cards in your graveyard as you cast this spell....
'As this creature enters, choose a player. Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard. Whenever the chosen player casts...
'Target opponent sacrifices a creature of their choice. If you control a creature with power 4 or greater, you gain 4 life.
Flash
When this artifact enters or leaves the battlefield, you may tap or untap target creature.
{3}{U}, Sacrifice this artifact: Draw two cards.
'Target player loses 1 life, discards a card, then sacrifices a permanent of their choice. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever...
'Target opponent sacrifices a creature of their choice. If you control a creature with power 4 or greater, you gain 4 life.
'When this creature enters, you may sacrifice an artifact or creature. When you do, exile target creature an opponent controls.
'As this creature enters, choose a player. Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard. Whenever the chosen player casts...
'Undergrowth — Distribute X +1/+1 counters among any number of target creatures you control, where X is the number of creature cards in your graveyard as you cast this spell....