edhseer Commander synergy, explained
Instant
Mana cost: {1}{U}
Return target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.
on-cast — bounce
Causes: an artifact leaves the battlefield, a battle leaves the battlefield, a creature leaves the battlefield, an enchantment leaves the battlefield, a planeswalker leaves the battlefield.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Echoing Truth is one).
When Echoing Truth is cast:
427 other cards care about it too. These are the ones with the most connections.
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Echoing Truth is one).
3 other cards care about it too. These are the ones with the most connections.
a creature leaves the battlefield — 4,238 cards in the game can cause this (Echoing Truth is one).
When a creature leaves the battlefield thanks to Echoing Truth:
25 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 (Echoing Truth is one).
When Echoing Truth is cast:
5 other cards care about it too. These are the ones with the most connections.