edhseer Commander synergy, explained
Land
This land enters tapped unless you control a basic land.
Add {R}.
activated {T} — adds 1 mana
Target creature you control gains firebending 4 until end of turn.
activated {1}{R}, {T} — grants a keyword
Causes: nothing.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Fire Nation Palace is one).
When Fire Nation Palace enters:
199 other cards care about it too. These are the ones with the most connections.