edhseer Commander synergy, explained
Land
This land enters tapped unless you control a Forest.
Add {G}.
activated {T} — adds 1 mana
This land becomes a copy of target permanent card in your graveyard until end of turn. Activate only if there are four or more card types among cards in your graveyard.
activated {2}{G}{G} — copies a permanent
Causes: copy a permanent.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Shifting Woodland is one).
When Shifting Woodland enters:
199 other cards care about it too. These are the ones with the most connections.