Mishra's Helix

a land becomes tapped — 50 cards in the game can cause this (Mishra's Helix is one).

When a land becomes tapped thanks to Mishra's Helix:

1. Steam Vines — deals 1 damage
2. Pooling Venom — makes a player lose 2 life
3. Chronic Flooding — mills a card
4. Roots of Life — gains you 1 life
5. Psychic Venom — deals 2 damage
6. Orcish Mine — triggers
7. Spreading Algae — kills it
8. Blight — kills it
9. Uncontrolled Infestation — kills it
10. Kudzu — kills a land

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 (Mishra's Helix is one).

When Mishra's Helix is cast:

1. Master Pakku — gets +1/+1
2. Mendicant Core, Guidelight — copies a spell
3. Sai, Master Thopterist — makes a token
4. Ravenous Robots — makes a token
5. Pinnacle Emissary — makes a token
6. Mirrodin Besieged — makes a token
7. Poetic Ingenuity — makes a token
8. Digsite Engineer — makes a token
9. Myrsmith — makes a token
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 (Mishra's Helix is one).

When Mishra's Helix 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

an artifact enters the battlefield — 4,643 cards in the game can cause this (Mishra's Helix is one).

When Mishra's Helix 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

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

anything enters the battlefield — 26,499 cards in the game can cause this (Mishra's Helix is one).

When Mishra's Helix enters:

1. HYDRA Assault Robot — deals 1 damage
2. Era of Innovation — puts a counter on a permanent you control

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

anything is cast — 31,128 cards in the game can cause this (Mishra's Helix is one).

When Mishra's Helix is cast:

1. Sokka, Bold Boomeranger — puts a +1/+1 counter on itself
2. Saheeli, Radiant Creator — puts a counter on a permanent you control

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