edhseer Commander synergy, explained
Land
Add {C}.
activated {T} — adds 1 mana
Add one mana of any color. Spend this mana only to cast a Dragon creature spell.
activated {T} — adds 1 mana
Return target Dragon creature card or Ugin planeswalker card from your graveyard to your hand.
activated {2}, {T}, Sacrifice this land —
activated {2}, {T}, Sacrifice this land — brings a card back
Causes: sacrifice a land, a land is put into a graveyard from the battlefield, a Dragon creature leaves a graveyard, a Dragon planeswalker leaves a graveyard.
Cares about: a card in a graveyard.
a land is sacrificed — 438 cards in the game can cause this (Haven of the Spirit Dragon is one).
When you sacrifice Haven of the Spirit Dragon:
a land in a graveyard — 634 cards in the game can cause this (Haven of the Spirit Dragon is one).
When Haven of the Spirit Dragon is in the graveyard:
121 other cards care about it too. These are the ones with the most connections.
a land is put into a graveyard from the battlefield — 636 cards in the game can cause this (Haven of the Spirit Dragon is one).
When Haven of the Spirit Dragon is put into a graveyard from the battlefield:
1 other card cares about it too. These are the ones with the most connections.
a land goes to a graveyard — 683 cards in the game can cause this (Haven of the Spirit Dragon is one).
When Haven of the Spirit Dragon hits the graveyard:
6 other cards care about it too. These are the ones with the most connections.
a land it grants abilities to — 1,237 cards in the game can cause this.
1,234 other cards cause it too. These are the ones with the most connections.
a creature leaves a graveyard — 1,302 cards in the game can cause this (Haven of the Spirit Dragon is one).
When a Dragon leaves a graveyard thanks to Haven of the Spirit Dragon:
3 other cards care about it too. These are the ones with the most connections.
a land enters the battlefield — 1,560 cards in the game can cause this (Haven of the Spirit Dragon is one).
When Haven of the Spirit Dragon enters:
199 other cards care about it too. These are the ones with the most connections.
anything leaves a graveyard — 2,503 cards in the game can cause this (Haven of the Spirit Dragon is one).
When a Dragon leaves a graveyard thanks to Haven of the Spirit Dragon:
13 other cards care about it too. These are the ones with the most connections.
anything is sacrificed — 3,450 cards in the game can cause this (Haven of the Spirit Dragon is one).
2 other cards care about it too. These are the ones with the most connections.
a permanent is put into a graveyard from the battlefield — 5,057 cards in the game can cause this (Haven of the Spirit Dragon is one).
5 other cards care about it too. These are the ones with the most connections.
a card in a graveyard — 7,589 cards in the game can cause this (Haven of the Spirit Dragon is one).
442 other cards care about it too. These are the ones with the most connections.