edhseer Commander synergy, explained
Instant
Mana cost: {2}{U}
Look at the top five cards of your library. Exile one of them face down and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost if it's an instant spell with mana value 2 or less. If you don't, put that card into your hand.
on-cast —
on-cast —
Causes: exile a card, cast anything.
Cares about: nothing.
anything is exiled — 2,497 cards in the game can cause this (Discover the Impossible is one).
an instant is cast — 3,931 cards in the game can cause this (Discover the Impossible is one).
When Discover the Impossible 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 (Discover the Impossible is one).
When Discover the Impossible is cast:
5 other cards care about it too. These are the ones with the most connections.