edhseer Commander synergy, explained
Sorcery
Mana cost: {U/B}{U/B}{U/B}{U/B}
Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
on-cast —
on-cast —
Causes: exile an artifact, exile a battle, exile a creature, exile an enchantment, exile an instant, exile a planeswalker, exile a sorcery, cast an artifact, cast a battle, cast a creature, cast an enchantment, cast an instant, cast a planeswalker, cast a sorcery.
Cares about: nothing.
a battle is cast — 100 cards in the game can cause this (Covetous Urge is one).
235 other cards care about it too. These are the ones with the most connections.
an artifact is exiled — 336 cards in the game can cause this (Covetous Urge 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 (Covetous Urge is one).
When a creature is exiled thanks to Covetous Urge:
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 (Covetous Urge is one).
1 other card cares about it too. These are the ones with the most connections.
an enchantment is cast — 3,673 cards in the game can cause this (Covetous Urge is one).
264 other cards care about it too. These are the ones with the most connections.
an artifact is cast — 3,683 cards in the game can cause this (Covetous Urge is one).
When an artifact is cast thanks to Covetous Urge:
274 other cards care about it too. These are the ones with the most connections.
a sorcery is cast — 3,720 cards in the game can cause this (Covetous Urge is one).
428 other cards care about it too. These are the ones with the most connections.