CMC 3 challenge deck
Based upon the Red Deck Wins philosphy, centered around Grim Lavamancer and elemental friends.
12 sac lands allow the Lavamancer to have constant fuel, which is backed up some of the best burn to dome.
Skullscorch is great, either force 2 discard or 4 to dome for a measly 2CMC.
Browbeat is unbeatable for a speed based deck, 3 mana for 3 cards or a lavaaxe for 2 less when most opponents are near the red line.
Lava spike shows how subtle the deck is, having a great mana-damage ratio, and is early supply for Lavamancer.
Lightning bolt is lightning bolt
Pyrostatic pillar is only in based upon the assumption that all decks will be 3CMC. When combined with the early damage this deck can bring causing opponents to shock themselves is nice.
Besides the Lavamancer there is the great graveyard suppling trio of Spark, Hellspark and Ball Lightning. Hellspark will mostly likely still unearth, depending on the defense. But all 3 are high damage/mana and fast.
Which when combined makes a very aggressive in your face deck.
Sideboarding
Breaking point for creature based decks.
Blood Moon for nonbasic land decks such as Dark Depths
Shattering Spree for artifact combo decks.
Sulfuric Vortex for lifegain decks
Aura barbs for enchantment decks