edhseer Commander synergy, explained
Instant
Mana cost: {2}{R}
Add {R}{R}{R}{R}{R}.
on-cast — adds 5 mana
Causes: nothing.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Seething Song is one).
When Seething Song 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 (Seething Song is one).
When Seething Song is cast:
5 other cards care about it too. These are the ones with the most connections.