edhseer Commander synergy, explained
Creature — Spirit
Mana cost: {B}{B}
Haste
At the beginning of your upkeep, if this card is in your graveyard with three or more creature cards above it, you may put this card onto the battlefield.
triggered — brings a card back
Causes: put anything onto the battlefield, anything leaves a graveyard.
Cares about: an upkeep.
a nontoken Spirit deals combat damage — 725 cards in the game can cause this (Nether Shadow is one).
a nontoken Spirit enters the battlefield — 727 cards in the game can cause this (Nether Shadow is one).
a Spirit enters the battlefield — 863 cards in the game can cause this (Nether Shadow is one).
When Nether Shadow enters:
a creature leaves a graveyard — 1,302 cards in the game can cause this (Nether Shadow is one).
When Nether Shadow leaves a graveyard:
3 other cards care about it too. These are the ones with the most connections.
anything leaves a graveyard — 2,503 cards in the game can cause this (Nether Shadow is one).
When Nether Shadow leaves a graveyard:
13 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 (Nether Shadow is one).
When Nether Shadow 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 (Nether Shadow is one).
When Nether Shadow attacks:
180 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 (Nether Shadow is one).
When Nether Shadow blocks:
23 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 (Nether Shadow is one).
2 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 (Nether Shadow is one).
When Nether Shadow enters:
303 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 (Nether Shadow is one).
39 other cards care about it too. These are the ones with the most connections.