edhseer Commander synergy, explained
Instant
Mana cost: {U}
Counter target sorcery spell.
on-cast —
If there are four or more card types among cards in your graveyard, search the graveyard, hand, and library of that spell's controller for any number of cards with the same name as that spell, exile those cards, then that player shuffles.
on-cast — searches a library
on-cast —
on-cast —
Causes: counter a sorcery, search spell , exile a spell, shuffle a library.
Cares about: nothing.
a library is searched — 982 cards in the game can cause this (Invasive Surgery is one).
When a spell searches a library thanks to Invasive Surgery:
anything is exiled — 2,497 cards in the game can cause this (Invasive Surgery is one).
an instant is cast — 3,931 cards in the game can cause this (Invasive Surgery is one).
When Invasive Surgery is cast:
427 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 (Invasive Surgery is one).
When Invasive Surgery is cast:
5 other cards care about it too. These are the ones with the most connections.