Pyretic Ritual

Geosurge

Add {R}{R}{R}{R}{R}{R}{R}. Spend this mana only to cast artifact or creature spells.

Djinn Illuminatus

({U/R} can be paid with either {U} or {R}.)
Flying
Each instant and sorcery spell you cast has replicate. The replicate cost is equal to its mana cost. (When you cast it, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)

Simian Spirit Guide

Exile Simian Spirit Guide from your hand: Add {R}.

Seething Song

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Mass Hysteria

Mountain

Rite of Flame

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

Elvish Spirit Guide

Exile Elvish Spirit Guide from your hand: Add {G}.

Pact of the Titan

Create a 4/4 red Giant creature token.
At the beginning of your next upkeep, pay {4}{R}. If you don't, you lose the game.