edhseer Commander synergy, explained
Instant
Mana cost: {X}{W}
As an additional cost to cast this spell, you may exile any number of white cards from your hand. This spell costs {2} less to cast for each card exiled this way.
on-cast —
on-cast — costs less
Exile target artifact, creature, or enchantment with mana value X or less.
on-cast —
Causes: exile a card, exile an artifact, exile a creature, exile an enchantment, an artifact leaves the battlefield, a creature leaves the battlefield, an enchantment leaves the battlefield.
Cares about: nothing.
an artifact is exiled — 336 cards in the game can cause this (March of Otherworldly Light is one).
1 other card cares about it too. These are the ones with the most connections.
a creature is exiled — 1,003 cards in the game can cause this (March of Otherworldly Light is one).
When a creature is exiled thanks to March of Otherworldly Light:
6 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 (March of Otherworldly Light is one).
an instant is cast — 3,931 cards in the game can cause this (March of Otherworldly Light is one).
When March of Otherworldly Light is cast:
427 other cards care about it too. These are the ones with the most connections.
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (March of Otherworldly Light is one).
3 other cards care about it too. These are the ones with the most connections.
a creature leaves the battlefield — 4,238 cards in the game can cause this (March of Otherworldly Light is one).
When a creature leaves the battlefield thanks to March of Otherworldly Light:
25 other cards care about it too. These are the ones with the most connections.
anything is cast — 31,128 cards in the game can cause this (March of Otherworldly Light is one).
When March of Otherworldly Light is cast:
5 other cards care about it too. These are the ones with the most connections.