edhseer Commander synergy, explained
Land — Gate
This land enters tapped unless you control two or fewer other lands.
As this land enters, choose a basic land type.
This land is the chosen type in addition to its other types.
static — changes what something is
Mana abilities of this land cost an additional 1 life to activate.
Causes: nothing.
Cares about: nothing.
a Gate enters the battlefield — 25 cards in the game can cause this (Thran Portal is one).
When Thran Portal enters:
a land enters the battlefield — 1,560 cards in the game can cause this (Thran Portal is one).
When Thran Portal enters:
200 other cards care about it too. These are the ones with the most connections.