edhseer Commander synergy, explained
Artifact
Mana cost: {9}
When this artifact enters, each opponent sacrifices three creatures of their choice.
triggered —
At the beginning of your upkeep, put target creature card from a graveyard onto the battlefield under your control. It's a Phyrexian in addition to its other types.
triggered — brings a card back
triggered — changes what something is
Causes: sacrifice a creature, a creature dies, put a creature onto the battlefield, a creature leaves a graveyard.
Cares about: an upkeep, a creature in a graveyard.
a creature leaves a graveyard — 1,302 cards in the game can cause this (Portal to Phyrexia is one).
When a creature leaves a graveyard thanks to Portal to Phyrexia:
3 other cards care about it too. These are the ones with the most connections.
a nontoken creature is sacrificed — 1,714 cards in the game can cause this (Portal to Phyrexia is one).
1 other card cares about it too. These are the ones with the most connections.
a creature is sacrificed — 1,741 cards in the game can cause this (Portal to Phyrexia is one).
When a creature is sacrificed thanks to Portal to Phyrexia:
22 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 (Portal to Phyrexia is one).
When a creature leaves a graveyard thanks to Portal to Phyrexia:
13 other cards care about it too. These are the ones with the most connections.
a creature in a graveyard — 2,769 cards in the game can cause this.
839 other cards care about it too. These are the ones with the most connections.
a nontoken creature dies — 2,769 cards in the game can cause this (Portal to Phyrexia is one).
When a creature dies thanks to Portal to Phyrexia:
67 other cards care about it too. These are the ones with the most connections.
a creature dies — 2,830 cards in the game can cause this (Portal to Phyrexia is one).
462 other cards care about it too. These are the ones with the most connections.
an artifact is cast — 3,683 cards in the game can cause this (Portal to Phyrexia is one).
280 other cards care about it too. These are the ones with the most connections.
an artifact enters the battlefield — 4,643 cards in the game can cause this (Portal to Phyrexia is one).
69 other cards care about it too. These are the ones with the most connections.
a nontoken creature enters the battlefield — 18,448 cards in the game can cause this (Portal to Phyrexia is one).
32 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 (Portal to Phyrexia is one).
465 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 (Portal to Phyrexia is one).
105 other cards care about it too. These are the ones with the most connections.