edhseer Commander synergy, explained
Sorcery
Mana cost: {3}{R}{R}
Add {R} for each tapped land your opponents control.
on-cast — adds mana
Causes: nothing.
Cares about: nothing.
a sorcery is cast — 3,720 cards in the game can cause this (Mana Geyser is one).
When Mana Geyser 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 (Mana Geyser is one).
When Mana Geyser is cast:
5 other cards care about it too. These are the ones with the most connections.