Magic: The Gathering Commander 2013 - Nature of the Beast is a 100-card singleton deck. Each deck includes three premium oversized legendary commander cards that can be used in lieu of the normal versions of the cards (which are also in the deck).

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Lands
1 Boros Garrison
1 Boros Guildgate
1 Command Tower
1 Contested Cliffs
1 Drifting Meadow
1 Evolving Wilds
8 Forest
1 Forgotten Cave
1 Gruul Guildgate
1 Homeward Path
1 Jungle Shrine
1 Khalni Garden
1 Mosswort Bridge
5 Mountain
1 Naya Panorama
1 New Benalia
1 Opal Palace
4 Plains
1 Rupture Spire
1 Secluded Steppe
1 Selesnya Guildgate
1 Selesnya Sanctuary
1 Slippery Karst
1 Smoldering Crater
1 Temple of the False God
1 Tranquil Thicket
1 Vitu-Ghazi, the City-Tree
1 Vivid Crag

Creatures
1 Archangel
1 Avenger of Zendikar
1 Baloth Woodcrasher
1 Crater Hellion
1 Deadwood Treefolk
1 Drumhunter
1 Eternal Dragon
1 Gahiji, Honored One
1 Grazing Gladehart
1 Krosan Tusker
1 Krosan Warchief
1 Magus of the Arena
1 Mayael the Anima
1 Mold Shambler
1 Naya Soulbeast
1 Rakeclaw Gargantuan
1 Rampaging Baloths
1 Ravenous Baloth
1 Spellbreaker Behemoth
1 Spitebellows
1 Terra Ravager
1 Valley Rannet

Spells
1 Behemoth Sledge
1 Boros Charm
1 Cultivate
1 Curse of Chaos
1 Curse of Predation
1 Curse of the Forsaken
1 Darksteel Mutation
1 Druidic Satchel
1 Fiery Justice
1 Fireball
1 Fires of Yavimaya
1 From the Ashes
1 Harmonize
1 Hull Breach
1 Mystic Barrier
1 Naya Charm
1 One Dozen Eyes
1 Rain of Thorns
1 Restore
1 Savage Twister
1 Seer's Sundial
1 Slice and Dice
1 Slice in Twain
1 Sol Ring
1 Spawning Grounds
1 Sprouting Vines
1 Street Spasm
1 Swiftfoot Boots
1 Tempt with Discovery
1 Tower of Fortunes
1 War Cadence
1 Warstorm Surge
1 Where Ancients Tread
1 Witch Hunt
1 Wrath of God