Grim Physician

When Grim Physician dies, target creature an opponent controls gets -1/-1 until end of turn.

Dead Weight

Enchant creature
Enchanted creature gets -2/-2.

When Burglar Rat enters, each opponent discards a card.

When Discordant Piper dies, create a 0/1 white Goat creature token.

Sacrifice an artifact or creature: Put a +1/+1 counter on Defiant Salvager. Activate only as a sorcery.

When Deathbloom Thallid dies, create a 1/1 green Saproling creature token.

Return target creature card from your graveyard to your hand.
Draw a card.

Destroy target creature. Create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Tithebearer Giant enters, you draw a card and you lose 1 life.

{T}: Add {C}.
{4}{B}, {T}, Sacrifice Blighted Fen: Target opponent sacrifices a creature.

{1}, Sacrifice a creature: Each opponent loses 1 life and you gain 1 life.

{2}{B}, Sacrifice a creature: Draw a card.