Mana Matrix

an artifact is cast — 3,683 cards in the game can cause this (Mana Matrix is one).

When Mana Matrix 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.

an enchantment it makes cheaper to cast — 3,713 cards in the game can cause this (Mana Matrix is one).

Mana Matrix reduces what:

1. Virtue of Knowledge // Vantress Visions — costs
2. Virtue of Courage // Embereth Blaze — costs
3. Devouring Sugarmaw // Have for Dinner — costs
4. Ferocious Werefox // Guard Change — costs
5. Virtue of Loyalty // Ardenvale Fealty — costs
6. Glimmerburst — costs
7. Fated Intervention — costs
8. Primeval Bounty — costs
9. Nature's Wrath — costs
10. Search for Dagger — costs

3,703 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 (Mana Matrix is one).

When Mana Matrix 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 instant it makes cheaper to cast — 3,773 cards in the game can cause this (Mana Matrix is one).

Mana Matrix reduces what:

1. Vivi's Persistence — costs
2. Shriveling Rot — costs
3. First Day of Class — costs
4. Wyll's Reversal — costs
5. Return the Favor — costs
6. Arcbond — costs
7. Theoretical Duplication — costs
8. Lure of Prey — costs

3,765 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 (Mana Matrix is one).

When Mana Matrix 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 (Mana Matrix is one).

When Mana Matrix enters:

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

97 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 (Mana Matrix is one).

When Mana Matrix 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

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