Pyretic Ritual

Gamble

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Mountain

Chandra's Ignition

Target creature you control deals damage equal to its power to each other creature and each opponent.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Electro, Assaulting Battery

Flying
You don't lose unspent red mana as steps and phases end.
Whenever you cast an instant or sorcery spell, add {R}.
When Electro leaves the battlefield, you may pay {X}. When you do, he deals X damage to target player.

Fling

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.

Desperate Ritual

Add {R}{R}{R}.
Splice onto Arcane {1}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)