Creatures (34) 1 Balefire Dragon 1 Silumgar, the Drifting Death 1 Atarka, World Render 1 Thunderbreak Regent 1 Dragonlord Dromoka 1 Dragonlord Ojutai 1 Hellkite Courser 1 Realmwalker 1 Goldspan Dragon 1 Old Gnawbone 1 Iymrith, Desert Doom 1 Dragonborn Champion 1 Lozhan, Dragons' Legacy 1 Fang Dragon 1 Korlessa, Scale Singer 1 Renari, Merchant of Marvels 1 Emerald Dragon 1 Crystal Dragon 1 Ganax, Astral Hunter 1 Sapphire Dragon 1 Ancient Copper Dragon 1 Wrathful Red Dragon 1 Miirym, Sentinel Wyrm 1 Draconic Muralists 1 Ancient Gold Dragon 1 Young Blue Dragon 1 Scaled Nurturer 1 Sword Coast Serpent 1 Reckless Barbarian 1 Patron of the Arts 1 Two-Headed Hellkite 1 Rith, Liberated Primeval 1 Zurgo and Ojutai 1 Guardian Scalelord Lands (40) 7 Forest 1 Plains 1 Reflecting Pool 1 Swamp 7 Mountain 2 Island 1 Murmuring Bosk 1 Jungle Shrine 1 Savage Lands 1 Exotic Orchard 1 Command Tower 1 Sandsteppe Citadel 1 Crucible of the Spirit Dragon 1 Haven of the Spirit Dragon 1 Path of Ancestry 1 Unclaimed Territory 1 Fabled Passage 1 Zagoth Triome 1 Ketria Triome 1 Indatha Triome 1 Rejuvenating Springs 1 The World Tree 1 Rockfall Vale 1 Secluded Courtyard 1 Ziatora's Proving Ground 1 Spara's Headquarters 1 Jetmir's Garden Spells (25) 1 Swords to Plowshares 1 Sol Ring 1 Arcane Denial 1 Nature's Lore 1 Three Visits 1 Greater Good 1 Hull Breach 1 Farseek 1 Negate 1 Nature's Claim 1 Crux of Fate 1 Reality Shift 1 Dragon Tempest 1 Painful Truths 1 Sylvan Reclamation 1 Dragon's Hoard 1 Deafening Clarion 1 Rhythm of the Wild 1 Return to Nature 1 Garruk's Uprising 1 Stinging Study 1 Jade Orb of Dragonkind 1 Contraband Livestock 1 Breath Weapon 1 Up the Beanstalk Here are the deck stats from our friends at Archidekt: Sharp-eyed observers may be looking at this and realizing its not the sort of disciplined mana curve that I usually show in my deckbuilding

Need a ton of mana
Darksteel Colossus is the best at what he does: Having no drawbacks, being very big and very hard to stop
Given the high density of triggered abilities in this Precon, cards like Strionic Resonator could serve as nice upgrades
With eight learn cards, Im not really interested in more than five Lessons
Feeding into lifegain strategies with a powerful removal effect, Karlov enables two powerful abilities to work in tandem and is a steal at only WB to cast