edhseer Commander synergy, explained
Legendary Artifact — Equipment
Mana cost: {3}
At the beginning of combat on your turn, equipped creature or a creature you control named Vecna gets +X/+X until end of turn, where X is the number of cards in your hand.
triggered — makes your creatures bigger
Equip—Pay 1 life for each card in your hand.
Equip {2}
Causes: nothing.
Cares about: the beginning of combat.
a nontoken Equipment enters the battlefield — 649 cards in the game can cause this (Hand of Vecna is one).
an Equipment enters the battlefield — 658 cards in the game can cause this (Hand of Vecna is one).
When Hand of Vecna enters:
5 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 (Hand of Vecna is one).
When Hand of Vecna is cast:
271 other cards care about it too. These are the ones with the most connections.
a nontoken artifact enters the battlefield — 3,768 cards in the game can cause this (Hand of Vecna is one).
When Hand of Vecna enters:
an artifact enters the battlefield — 4,643 cards in the game can cause this (Hand of Vecna is one).
When Hand of Vecna enters:
55 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 (Hand of Vecna is one).
When Hand of Vecna enters:
39 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 (Hand of Vecna is one).
When Hand of Vecna is cast:
10 other cards care about it too. These are the ones with the most connections.