edhseer Commander synergy, explained
Instant
Mana cost: {1}{U}
Look at the top X cards of your library, where X is the number of basic land types among lands you control. Put one of those cards into your hand and the rest on the bottom of your library in any order.
on-cast — puts cards into your hand
Causes: nothing.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Worldly Counsel is one).
When Worldly Counsel 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 (Worldly Counsel is one).
When Worldly Counsel is cast:
5 other cards care about it too. These are the ones with the most connections.