edhseer Commander synergy, explained
World Enchantment
Mana cost: {1}{U}{U}
At the beginning of each player's upkeep, that player chooses artifact, creature, land, or non-Aura enchantment. All nontoken permanents of that type phase out.
triggered —
Causes: a nontoken permanent phases out.
Cares about: an upkeep.
a permanent phases out — 6 cards in the game can cause this (Teferi's Realm is one).
an enchantment is cast — 3,673 cards in the game can cause this (Teferi's Realm is one).
When Teferi's Realm is cast:
255 other cards care about it too. These are the ones with the most connections.
a nontoken enchantment enters the battlefield — 3,691 cards in the game can cause this (Teferi's Realm is one).
an enchantment enters the battlefield — 3,743 cards in the game can cause this (Teferi's Realm is one).
When Teferi's Realm enters:
59 other cards care about it too. These are the ones with the most connections.
anything enters the battlefield — 26,499 cards in the game can cause this (Teferi's Realm is one).
20 other cards care about it too. These are the ones with the most connections.