edhseer Commander synergy, explained
Instant
Mana cost: {1}{U}
Target player shuffles up to three target cards from their graveyard into their library.
on-cast —
Flashback {G}
Causes: shuffle a library, anything leaves a graveyard.
Cares about: nothing.
a library is shuffled — 1,189 cards in the game can cause this (Memory's Journey is one).
When Memory's Journey shuffles a library:
anything leaves a graveyard — 2,503 cards in the game can cause this (Memory's Journey is one).
When Memory's Journey leaves a graveyard:
13 other cards care about it too. These are the ones with the most connections.
an instant is cast — 3,931 cards in the game can cause this (Memory's Journey is one).
When Memory's Journey is cast:
427 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 (Memory's Journey is one).
When Memory's Journey is cast:
5 other cards care about it too. These are the ones with the most connections.