edhseer Commander synergy, explained
Land
Add {C}.
activated {T} — adds 1 mana
Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.
activated {1}, {T} — adds 1 mana
activated {1}, {T} — arrives with counters
Causes: put a counter on anything.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Opal Palace is one).
When Opal Palace enters:
199 other cards care about it too. These are the ones with the most connections.
anything gets a counter — 4,415 cards in the game can cause this (Opal Palace is one).
7 other cards care about it too. These are the ones with the most connections.