Sacrifice a creature: Add {C}{C}.

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{1}, {T}: Add {B}{G}.

{2}, {T}, Sacrifice a creature: Draw a card. As long as you control a Cleric, Relic Vial has "Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life."

Serrated Arrows enters the battlefield with three arrowhead counters on it. At the beginning of your upkeep, if there are no arrowhead counters on Serrated Arrows, sacrifice it. {T}, Remove an arrowhead counter from Serrated Arrows: Put a -1/-1 counter on target creature.

Equipped creature gets +1/-1. Whenever equipped creature dies, draw two cards. Equip {1}

{T}: Add {C}. {T}: Add {B} or {G}. Talisman of Resilience deals 1 damage to you.

{T}, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) Whenever an opponent casts a spell, put a -1/-1 counter on Ammit Eternal. Whenever Ammit Eternal deals combat damage to a player, remove all -1/-1 counters from it.

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.

When Bloom Hulk enters the battlefield, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying Whenever Butcher of Malakir or another creature you control dies, each opponent sacrifices a creature.

Flying Carnifex Demon enters the battlefield with two -1/-1 counters on it. {B}, Remove a -1/-1 counter from Carnifex Demon: Put a -1/-1 counter on each other creature.

When Channeler Initiate enters the battlefield, put three -1/-1 counters on target creature you control. {T}, Remove a -1/-1 counter from Channeler Initiate: Add one mana of any color.

{T}: Target player discards a card. Activate only during your turn. Put a -1/-1 counter on Cinderhaze Wretch: Untap Cinderhaze Wretch.

{T}: Add {G}. Put a -1/-1 counter on Devoted Druid: Untap Devoted Druid.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Sacrifice a creature: Regenerate Dimir House Guard. Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Landfall — Whenever a land enters the battlefield under your control, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying Whenever Falkenrath Noble or another creature dies, target player loses 1 life and you gain 1 life.

Deathtouch Whenever a creature you control with deathtouch attacks, each opponent loses 1 life and you gain 1 life. Whenever a creature you control with deathtouch deals damage to a planeswalker, destroy that planeswalker.

Whenever another green creature enters the battlefield under your control, put a +1/+1 counter on target creature.

Wither (This deals damage to creatures in the form of -1/-1 counters.) At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature.

Whenever a token you control leaves the battlefield, each opponent loses 1 life and you gain 1 life.

Wither (This deals damage to creatures in the form of -1/-1 counters.) Whenever a creature an opponent controls with a -1/-1 counter on it dies, you may return that card to the battlefield under your control.

Reach Whenever Obelisk Spider deals combat damage to a creature, put a -1/-1 counter on that creature. Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life.

Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Reach (This creature can block creatures with flying.) Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Whenever another creature dies, each opponent loses 1 life.

When Pollenbright Druid enters the battlefield, choose one — • Put a +1/+1 counter on target creature. • Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{B/G}, Remove a -1/-1 counter from a creature you control: Quillspike gets +3/+3 until end of turn.

When Skinrender enters the battlefield, put three -1/-1 counters on target creature.

When Soul Snuffers enters the battlefield, put a -1/-1 counter on each creature.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

Whenever another creature you control dies, Vindictive Vampire deals 1 damage to each opponent and you gain 1 life.

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Wickerbough Elder enters the battlefield with a -1/-1 counter on it. {G}, Remove a -1/-1 counter from Wickerbough Elder: Destroy target artifact or enchantment.

When Bastion of Remembrance enters the battlefield, create a 1/1 white Human Soldier creature token. Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

Whenever a creature dies, if it had a -1/-1 counter on it, put a -1/-1 counter on target creature.

Creatures you control have "{T}: Add one mana of any color."

Whenever a -1/-1 counter is put on a creature, you may create a 1/1 green Elf Warrior creature token.

Whenever a creature you control dies, you gain 1 life and draw a card.

Whenever you put one or more -1/-1 counters on a creature, create that many 1/1 black Insect creature tokens.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Destroy target creature. Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Return target permanent card from your graveyard to your hand. If a creature died this turn, create two 1/1 green Saproling creature tokens.

Choose one — • All creatures get -1/-1 until end of turn. • Destroy target enchantment. • Regenerate each creature you control.

Put a -1/-1 counter on target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Destroy target artifact or creature. It can't be regenerated.

Choose one — • Destroy target artifact. • Destroy target enchantment. • Exile target card from a graveyard.

Sacrifice a land. Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

For each token you control, create a token that's a copy of that permanent.

{T}: Add {C}. {3}{G}, {T}, Sacrifice Blighted Woodland: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

{T}: Add one mana of any color in your commander's color identity.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

Foul Orchard enters the battlefield tapped. {T}: Add {B} or {G}.

Golgari Guildgate enters the battlefield tapped. {T}: Add {B} or {G}.

Golgari Rot Farm enters the battlefield tapped. When Golgari Rot Farm enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{G}.

{T}: Add {C}. {1}, {T}, Sacrifice Grasping Dunes: Put a -1/-1 counter on target creature. Activate only as a sorcery.

{T}: Add {C}. {T}, Pay 1 life: Add {B}. {2}{B}{B}, {T}, Sacrifice a Desert: Put two -1/-1 counters on target creature an opponent controls. Activate only as a sorcery.

Jungle Hollow enters the battlefield tapped. When Jungle Hollow enters the battlefield, you gain 1 life. {T}: Add {B} or {G}.

{T}: Add {C}. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Myriad Landscape enters the battlefield tapped. {T}: Add {C}. {2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

({T}: Add {B}.)

{T}: Add {C}. {T}: Add {B} or {G}. Activate only if you control a Swamp.

Temple of Malady enters the battlefield tapped. When Temple of Malady enters the battlefield, scry 1. {T}: Add {B} or {G}.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Vivid Grove enters the battlefield tapped with two charge counters on it. {T}: Add {G}. {T}, Remove a charge counter from Vivid Grove: Add one mana of any color.

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Search your library for a card, put that card into your hand, then shuffle.

Search your library for up to X basic land cards, where X is the number of tapped creatures you control, put those cards onto the battlefield tapped, then shuffle.

Put a -1/-1 counter on target creature, two -1/-1 counters on another target creature, and three -1/-1 counters on a third target creature.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control. Destroy target creature.