edhseer Commander synergy, explained
Instant
Mana cost: {2}{U}{U}
Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may shuffle up to four target cards from your graveyard into your library.
on-cast —
on-cast —
on-cast —
Causes: counter a spell, exile a spell, a spell leaves the battlefield, shuffle a library, anything leaves a graveyard.
Cares about: nothing.
anything is exiled — 2,497 cards in the game can cause this (Devious Cover-Up is one).
anything leaves a graveyard — 2,503 cards in the game can cause this (Devious Cover-Up is one).
When Devious Cover-Up leaves a graveyard:
13 other cards care about it too. These are the ones with the most connections.
an instant is cast — 3,931 cards in the game can cause this (Devious Cover-Up is one).
When Devious Cover-Up is cast:
427 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 (Devious Cover-Up is one).
When Devious Cover-Up is cast:
5 other cards care about it too. These are the ones with the most connections.