edhseer Commander synergy, explained
Legendary Creature — Elder Demon
Mana cost: {3}{B}{B}
Flying
Create a Blood token. If you sacrificed an Angel this way, create a number of Blood tokens equal to its toughness instead.
activated Sacrifice another creature —
activated Sacrifice another creature — makes a token
activated Sacrifice another creature — makes its toughness tokens
Return each creature card from your graveyard to the battlefield with a finality counter on it. Those creatures are Vampires in addition to their other types.
activated {W/B}{W/B}{W/B}, Sacrifice six Blood tokens —
activated {W/B}{W/B}{W/B}, Sacrifice six Blood tokens — brings a card back
activated {W/B}{W/B}{W/B}, Sacrifice six Blood tokens — puts a counter on it
activated {W/B}{W/B}{W/B}, Sacrifice six Blood tokens — grants a keyword
Causes: sacrifice a creature, a creature dies, create a Blood artifact token, put a Blood artifact token onto the battlefield, sacrifice a Blood artifact token, a Blood artifact token is put into a graveyard from the battlefield, put a creature onto the battlefield, a creature leaves a graveyard, put a counter on anything.
Cares about: a creature to sacrifice, a Blood to sacrifice, a creature in a graveyard.
anything leaves the battlefield — 1 card in Shilgengar's colors can cause this (Shilgengar is one).
a Blood token is sacrificed — 6 cards in Shilgengar's colors can cause this (Shilgengar is one).
a Blood token is created — 20 cards in Shilgengar's colors can cause this (Shilgengar is one).
a token is sacrificed — 32 cards in Shilgengar's colors can cause this (Shilgengar is one).
When a Blood is sacrificed thanks to Shilgengar, Sire of Famine:
a token is put into a graveyard from the battlefield — 51 cards in Shilgengar's colors can cause this (Shilgengar is one).
a token leaves the battlefield — 65 cards in Shilgengar's colors can cause this (Shilgengar is one).
3 other cards care about it too. These are the ones with the most connections.
a Demon enters the battlefield — 184 cards in Shilgengar's colors can cause this (Shilgengar is one).
an artifact is sacrificed — 450 cards in Shilgengar's colors can cause this (Shilgengar is one).
1 other card cares about it too. These are the ones with the most connections.
an artifact is put into a graveyard from the battlefield — 559 cards in Shilgengar's colors can cause this (Shilgengar is one).
When a Blood is put into a graveyard from the battlefield thanks to Shilgengar, Sire of Famine:
15 other cards care about it too. These are the ones with the most connections.
a creature leaves a graveyard — 860 cards in Shilgengar's colors can cause this (Shilgengar is one).
When Shilgengar, Sire of Famine leaves a graveyard:
1 other card cares about it too. These are the ones with the most connections.
a nontoken creature is sacrificed — 899 cards in Shilgengar's colors can cause this (Shilgengar is one).
When you sacrifice another creature to Shilgengar, Sire of Famine:
a creature is sacrificed — 902 cards in Shilgengar's colors can cause this (Shilgengar is one).
When you sacrifice another creature to Shilgengar, Sire of Famine:
2 other cards care about it too. These are the ones with the most connections.
anything leaves a graveyard — 1,365 cards in Shilgengar's colors can cause this (Shilgengar is one).
When Shilgengar, Sire of Famine leaves a graveyard:
a creature in a graveyard — 1,669 cards in Shilgengar's colors can cause this.
1,327 other cards care about it too. These are the ones with the most connections.
a nontoken creature dies — 1,669 cards in Shilgengar's colors can cause this (Shilgengar is one).
43 other cards care about it too. These are the ones with the most connections.
an artifact it grants types to — 3,002 cards in Shilgengar's colors can cause this.
3,001 other cards cause it too. These are the ones with the most connections.
a creature attacks — 6,543 cards in Shilgengar's colors can cause this (Shilgengar is one).
110 other cards care about it too. These are the ones with the most connections.