edhseer Commander synergy, explained

River Song's Diary

River Song's Diary

Artifact — Book

Mana cost: {3}

How we read this card

Whenever a player casts an instant or sorcery spell from their hand, exile it instead of putting it into a graveyard as it resolves.

triggered —

At the beginning of your upkeep, if there are four or more cards exiled with this artifact, choose one of them at random. You may cast it without paying its mana cost.

triggered —

Causes: exile an instant, exile a sorcery, cast anything.

Cares about: an instant is cast, a sorcery is cast, an upkeep.

Works well with

anything is exiled — 2,497 cards in the game can cause this (River Song's Diary is one).

  1. The War Doctor — When an instant or sorcery is exiled thanks to River Song's Diary, The War Doctor puts a time counter on itself

an artifact is cast — 3,683 cards in the game can cause this (River Song's Diary is one).

When River Song's Diary 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 (River Song's Diary is one).

When River Song's Diary 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

cast an instant — 3,931 cards in the game can cause this.

  1. Titan's Presence — When Titan's Presence is cast, River Song's Diary exiles it
  2. Eldritch Immunity — When Eldritch Immunity is cast, River Song's Diary exiles it
  3. Not of This World — When Not of This World is cast, River Song's Diary exiles it
  4. Scour from Existence — When Scour from Existence is cast, River Song's Diary exiles it
  5. Spatial Contortion — When Spatial Contortion is cast, River Song's Diary exiles it

3,926 other cards cause it too. These are the ones with the most connections.

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

When River Song's Diary 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 (River Song's Diary is one).

When River Song's Diary enters:

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

38 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 (River Song's Diary is one).

When River Song's Diary 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.