edhseer Commander synergy, explained
Legendary Land
If this card is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand.
static —
static — puts counters on it
static —
Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.
activated {T} — adds 1 mana
Causes: put anything onto the battlefield, put a counter on anything, exile a card.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Gemstone Caverns is one).
When Gemstone Caverns enters:
199 other cards care about it too. These are the ones with the most connections.
anything is exiled — 2,497 cards in the game can cause this (Gemstone Caverns is one).
anything gets a counter — 4,415 cards in the game can cause this (Gemstone Caverns is one).
7 other cards care about it too. These are the ones with the most connections.