edhseer Commander synergy, explained
Creature — Spirit Advisor
Mana cost: {4}{U}{U}
Flying
Descend 4 — When this creature enters, if there are four or more permanent cards in your graveyard, return up to one target nonland permanent other than this creature to its owner's hand.
triggered — bounce
Causes: a creature leaves the battlefield.
Cares about: a permanent in a graveyard.
hits creature — 2,298 cards in the game can cause this.
12 other cards care about it too. These are the ones with the most connections.
put a permanent into a graveyard — 173 cards in the game can cause this.
163 other cards cause it too. These are the ones with the most connections.
a nontoken Spirit deals combat damage — 725 cards in the game can cause this (Council of Echoes is one).
a nontoken Spirit enters the battlefield — 727 cards in the game can cause this (Council of Echoes is one).
a Spirit enters the battlefield — 863 cards in the game can cause this (Council of Echoes is one).
When Council of Echoes enters:
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Council of Echoes 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 (Council of Echoes is one).
When a creature leaves the battlefield thanks to Council of Echoes:
27 other cards care about it too. These are the ones with the most connections.
anything attacks — 17,934 cards in the game can cause this (Council of Echoes is one).
When Council of Echoes attacks:
112 other cards care about it too. These are the ones with the most connections.
a creature attacks — 17,934 cards in the game can cause this (Council of Echoes is one).
When Council of Echoes attacks:
181 other cards care about it too. These are the ones with the most connections.
a creature blocks — 17,934 cards in the game can cause this (Council of Echoes is one).
When Council of Echoes blocks:
21 other cards care about it too. These are the ones with the most connections.
a nontoken creature attacks — 17,934 cards in the game can cause this (Council of Echoes is one).
When Council of Echoes attacks:
a creature is cast — 18,010 cards in the game can cause this (Council of Echoes is one).
90 other cards care about it too. These are the ones with the most connections.
a creature enters the battlefield — 19,800 cards in the game can cause this (Council of Echoes is one).
When Council of Echoes enters:
300 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 (Council of Echoes is one).
42 other cards care about it too. These are the ones with the most connections.