edhseer Commander synergy, explained
Sorcery
Mana cost: {3}{U}{U}
Reveal cards from the top of your library until you reveal three nonland cards. Put the nonland cards revealed this way into your hand, then put the rest of the revealed cards on the bottom of your library in any order.
on-cast — searches a library
Causes: nothing.
Cares about: nothing.
a sorcery is cast — 3,720 cards in the game can cause this (Fathom Trawl is one).
When Fathom Trawl is cast:
424 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 (Fathom Trawl is one).
When Fathom Trawl is cast:
5 other cards care about it too. These are the ones with the most connections.