edhseer Commander synergy, explained
Instant
Mana cost: {4}{U}
This spell costs {2} less to cast if it targets an attacking creature.
on-cast — costs 2 less
Put target creature into its owner's library second from the top.
on-cast —
Causes: a creature leaves the battlefield.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Bury in Books is one).
When Bury in Books is cast:
427 other cards care about it too. These are the ones with the most connections.
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Bury in Books 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 (Bury in Books is one).
When a creature leaves the battlefield thanks to Bury in Books:
25 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 (Bury in Books is one).
When Bury in Books is cast:
5 other cards care about it too. These are the ones with the most connections.