edhseer Commander synergy, explained
Snow Land
Add {C}.
activated {T} — adds 1 mana
This land becomes a 4/3 creature with vigilance and all creature types until end of turn. It's still a land.
activated {S}{S}{S} — turns something into a creature
Causes: nothing.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Faceless Haven is one).
When Faceless Haven enters:
199 other cards care about it too. These are the ones with the most connections.