The Vision and Scarlet Witch

a Hero gets a counter — 63 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. Invisible Woman, Sue Storm — When The Vision and Scarlet Witch gets a counter, Invisible Woman, Sue Storm makes a token

cast a spell — 155 cards in the game can cause this.

1. Buster Sword — When a spell is cast thanks to Buster Sword, The Vision and Scarlet Witch adds 1 mana
2. Harness the Storm — When Harness the Storm is cast, The Vision and Scarlet Witch adds 1 mana
3. Goliath Daydreamer — When Goliath Daydreamer is cast, The Vision and Scarlet Witch adds 1 mana
4. Spawnsire of Ulamog — When Spawnsire of Ulamog is cast, The Vision and Scarlet Witch adds 1 mana
5. Shell of the Last Kappa — When Shell of the Last Kappa is cast, The Vision and Scarlet Witch adds 1 mana
6. Chandra, Flame's Catalyst — When an instant or sorcery is cast thanks to Chandra, Flame's Catalyst, The Vision and Scarlet Witch adds 1 mana
7. Mogg Salvage — When Mogg Salvage is cast, The Vision and Scarlet Witch adds 1 mana
8. Shaman's Trance — When Shaman's Trance is cast, The Vision and Scarlet Witch adds 1 mana
9. Conspicuous Snoop — When a Goblin is cast thanks to Conspicuous Snoop, The Vision and Scarlet Witch adds 1 mana
10. Dream Pillager — When Dream Pillager is cast, The Vision and Scarlet Witch adds 1 mana

145 other cards cause it too. These are the ones with the most connections.

a Mutant attacks — 280 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. Wolverine, Claws Out — When The Vision and Scarlet Witch attacks, Wolverine, Claws Out makes your creatures bigger

a Mutant deals combat damage — 280 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. Heroes in a Half Shell — When The Vision and Scarlet Witch deals combat damage, Heroes in a Half Shell puts a counter on a permanent

a Mutant enters the battlefield — 286 cards in the game can cause this (The Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch enters:

1. Genghis Frog — makes a token
2. X-23, Deadly Weapon — puts a counter on a permanent
3. April O'Neil, Live on the Scene — triggers

a nontoken Hero enters the battlefield — 358 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. Black Panther, Vanguard — When The Vision and Scarlet Witch enters, Black Panther, Vanguard triggers

a Hero enters the battlefield — 375 cards in the game can cause this (The Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch enters:

1. Hawkeye, Trick Shot — deals damage
2. Captain America, Team Leader — grants haste and vigilance
3. Nighthawk, Dark Defender — gives +1/+1
4. Team Transmitter — gains you 1 life

an artifact attacks — 1,243 cards in the game can cause this (The Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch attacks:

1. Alibou, Ancient Witness — deals X damage
2. Bio-Asset Allocator — makes each opponent lose 1 life
3. Assaultron Dominator — puts a counter on a permanent
4. Aloy, Savior of Meridian — triggers

an artifact deals combat damage — 1,243 cards in the game can cause this (The Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch deals combat damage:

1. Locutus of Borg — makes a token
2. Sharding Sphinx — makes a token
3. Antagonist Incorporator — makes a token
4. Research Thief — draws you 1 card
5. Thopter Spy Network — draws you 1 card
6. Hive Mind Coprocessor — makes you lose life
7. Pia Nalaar, Chief Mechanic — puts a counter on a permanent you control
8. Automated Assembly Line — triggers

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

a nontoken artifact deals combat damage — 1,243 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. Virulent Silencer — When The Vision and Scarlet Witch deals combat damage, Virulent Silencer puts 2 counters on a permanent

a creature gets a counter — 2,691 cards in the game can cause this (The Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Generous Patron — draws you 1 card
6. Shalai and Hallar — deals that much damage
7. Danny Pink — draws you 1 card
8. Enduring Scalelord — puts a +1/+1 counter on itself
9. Bold Plagiarist — puts counters on a permanent
10. Mikey & Leo, Chaos & Order — draws you 1 card

33 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 Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch 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 Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch 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

anything gets a counter — 4,415 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. All Will Be One — When The Vision and Scarlet Witch gets a counter, All Will Be One deals that much damage

8 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 Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch enters:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils

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

a creature is cast — 18,010 cards in the game can cause this (The Vision and Scarlet Witch is one).

1. Primeval Bounty — When The Vision and Scarlet Witch is cast, Primeval Bounty makes a token

90 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 Vision and Scarlet Witch is one).

When The Vision and Scarlet Witch enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself
3. Pollywog Prodigy — puts a counter on itself
4. Lonis, Genetics Expert — puts a counter on itself

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