The Darkness Crystal

a creature is exiled — 1,003 cards in the game can cause this (The Darkness Crystal is one).

When a creature is exiled thanks to The Darkness Crystal:

1. Ashnod's Intervention — brings a card back
2. Soulherder — puts a +1/+1 counter on itself

7 other cards care about it too. These are the ones with the most connections.

life is gained — 2,076 cards in the game can cause this (The Darkness Crystal is one).

When The Darkness Crystal gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

84 other cards care about it too. These are the ones with the most connections.

anything is exiled — 2,497 cards in the game can cause this (The Darkness Crystal is one).

1. The War Doctor — When a creature is exiled thanks to The Darkness Crystal, The War Doctor puts a time counter on itself

6 other cards care about it too. These are the ones with the most connections.

an artifact is cast — 3,683 cards in the game can cause this (The Darkness Crystal is one).

When The Darkness Crystal is cast:

1. Mendicant Core, Guidelight — copies a spell
2. Sai, Master Thopterist — makes a token
3. Ravenous Robots — makes a token
4. Pinnacle Emissary — makes a token
5. Mirrodin Besieged — makes a token
6. Poetic Ingenuity — makes a token
7. Digsite Engineer — makes a token
8. Myrsmith — makes a token
9. Riddlesmith — draws you 1 card
10. Dr. Madison Li — puts a counter on a permanent you control

271 other cards care about it too. These are the ones with the most connections.

a nontoken artifact enters the battlefield — 3,768 cards in the game can cause this (The Darkness Crystal is one).

When The Darkness Crystal enters:

1. Ultron, Artificial Malevolence — makes a token
2. The Prydwen, Steel Flagship — makes a token
3. Conquest Mission — puts a quest counter on itself
4. Surge Conductor — proliferates
5. Replication Specialist — makes a token
6. Weapons Manufacturing — makes a token
7. Mirrorworks — makes a token

a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (The Darkness Crystal is one).

1. Dual Nature — When a creature leaves the battlefield thanks to The Darkness Crystal, Dual Nature exiles a creature

3 other cards care about it too. These are the ones with the most connections.

a creature leaves the battlefield — 4,238 cards in the game can cause this (The Darkness Crystal is one).

When a creature leaves the battlefield thanks to The Darkness Crystal:

1. Extractor Demon — mills a card
2. Valor of the Worthy — makes a token
3. Traveling Plague — returns itself from the graveyard
4. Funeral March — makes a player sacrifice a creature

118 other cards care about it too. These are the ones with the most connections.

anything gets a counter — 4,415 cards in the game can cause this (The Darkness Crystal is one).

1. All Will Be One — When a permanent gets a counter thanks to The Darkness Crystal, All Will Be One deals that much damage

13 other cards care about it too. These are the ones with the most connections.

an artifact enters the battlefield — 4,643 cards in the game can cause this (The Darkness Crystal is one).

When The Darkness Crystal enters:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

206 other cards care about it too. These are the ones with the most connections.

a nontoken creature enters the battlefield — 18,448 cards in the game can cause this (The Darkness Crystal is one).

When a creature enters thanks to The Darkness Crystal:

1. Riku of Two Reflections — makes a token
2. Samwise Gamgee — makes a token
3. Chainer, Nightmare Adept — grants haste
4. Preston, the Vanisher — makes a token
5. Angelic Sell-Sword — makes a token
6. Arni, Humble Scribe — untaps itself
7. Saradoc, Master of Buckland — makes a token
8. Bramble Sovereign — makes a token
9. Lonis, Cryptozoologist — triggers
10. Radiant Solar — triggers

23 other cards care about it too. These are the ones with the most connections.

a creature it makes cheaper to cast — 19,392 cards in the game can cause this (The Darkness Crystal is one).

The Darkness Crystal reduces what:

1. Devouring Sugarmaw // Have for Dinner — costs
2. The Rani — costs
3. Kaito, Dancing Shadow — costs

19,389 other cards care about it too. These are the ones with the most connections.

a creature enters the battlefield — 19,800 cards in the game can cause this (The Darkness Crystal is one).

1. Lunarch Veteran // Luminous Phantom — When a creature enters thanks to The Darkness Crystal, Lunarch Veteran // Luminous Phantom gains you 1 life

3,036 other cards care about it too. These are the ones with the most connections.