edhseer Commander synergy, explained
Instant
Mana cost: {1}{R}{R}{R}{R}
You may cast up to two instant and/or sorcery spells with total mana value 6 or less from your graveyard and/or hand without paying their mana costs. If those spells would be put into your graveyard, exile them instead. Exile Invoke Calamity.
on-cast — brings a card back
on-cast —
on-cast —
Causes: cast an instant, cast a sorcery, an instant leaves a graveyard, a sorcery leaves a graveyard, exile a spell, a spell leaves the battlefield, exile a card, anything leaves the battlefield.
Cares about: an instant in a graveyard, a sorcery in a graveyard.
an instant in a graveyard — 2 cards in the game can cause this (Invoke Calamity is one).
an instant leaves a graveyard — 202 cards in the game can cause this (Invoke Calamity is one).
anything is exiled — 2,497 cards in the game can cause this (Invoke Calamity is one).
anything leaves a graveyard — 2,503 cards in the game can cause this (Invoke Calamity is one).
When Invoke Calamity leaves a graveyard:
13 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 (Invoke Calamity is one).
424 other cards care about it too. These are the ones with the most connections.