Seething Song Combos
Invasion of Arcavios // Invocation of the Founders + Displacer Kitten + Seething Song
Torchling + Dual Casting + Seething Song
Rootha, Mercurial Artist + Sneak Attack + Seething Song
Reiterate + Seething Song + Runaway Steam-Kin
Reiterate + Seething Song + Bonus Round
Reiterate + Ruby Medallion + Seething Song
Pili-Pala + Dual Casting + Seething Song
Patron of the Moon + Uyo, Silent Prophet + Seething Song
Mizzix of the Izmagnus + Seething Song + Reiterate
Memory Crystal + Reiterate + Seething Song
Cormela, Glamour Thief + Saw in Half + Seething Song
Ill-Gotten Gains + Seething Song + Desperate Ritual
Ill-Gotten Gains + Pyretic Ritual + Seething Song
Eye of the Storm + Runic Repetition + Seething Song
Combo result
Infinite storm count. Infinite magecraft triggers. Infinite red mana. Infinite copies of spells exiled by Eye of the Storm.
Prerequisites
Runic Repetition and Seething Song exiled with Eye of the Storm. All permanents on the battlefield. An additional instant or sorcery with flashback and with mana cost {R}{R}{R}{R}{R} or less in hand or graveyard. Enough mana available to cast the additional spell.