edhseer Commander synergy, explained
Sorcery
Mana cost: {X}{U}{U}
Exile the top X cards of your library. You may cast an instant or sorcery spell with mana value X or less from among them without paying its mana cost. Then put the exiled instant and sorcery cards that weren't cast this way into your hand and the rest on the bottom of your library in a random order.
on-cast —
on-cast —
Causes: exile a card, cast an instant, cast a sorcery.
Cares about: nothing.
anything is exiled — 2,497 cards in the game can cause this (Muse Vortex is one).
a sorcery is cast — 3,720 cards in the game can cause this (Muse Vortex is one).
When Muse Vortex is cast:
424 other cards care about it too. These are the ones with the most connections.