Why can't I hold all these cards?!!!!

Commander: _____
Estimated Value: $282.93

Creatures (23)
1 Bellowing Tanglewurm $0.06
1 Elvish Mystic $0.28
1 Elvish Piper $3.31
1 Fierce Empath $0.10
1 Foe-Razer Regent $0.45
1 Ghalta, Primal Hunger $0.31
1 Gigantosaurus $1.50
1 Goreclaw, Terror of Qal Sisma $1.79
1 Impervious Greatwurm $0.32
1 Llanowar Elves $0.51
1 Mossbridge Troll $1.75
1 Myojin of Life's Web $8.73
1 Nylea, God of the Hunt $8.97
1 Protean Hulk $0.34
1 Psychosis Crawler $0.33
1 Rhonas the Indomitable $5.22
1 Selvala, Heart of the Wilds $42.71
1 Spearbreaker Behemoth $3.21
1 Stonehoof Chieftain $11.72
1 Stuffy Doll $3.62
1 Ulamog, the Ceaseless Hunger $30.59
1 Vigor $4.99
1 Worldspine Wurm $8.74
Lands (36)
1 Blighted Woodland $0.12
29 Forest $0.05
1 Mosswort Bridge $0.28
1 Myriad Landscape $2.05
1 Nykthos, Shrine to Nyx $11.41
1 Reliquary Tower $0.18
1 Rogue's Passage $0.13
1 Scavenger Grounds $1.54
Other Spells (40)
1 Beastmaster Ascension $4.01
1 Berserk $13.99
1 Blossoming Defense $0.20
1 Caged Sun $0.29
1 Cauldron of Souls $0.35
1 Cultivate $0.14
1 Darksteel Plate $5.73
1 Dragon Throne of Tarkir $0.38
1 Explosive Vegetation $0.08
1 Garruk, Caller of Beasts $0.26
1 Greater Good $3.45
1 Green Sun's Zenith $8.00
1 Growing Rites of Itlimoc  Flip $
1 Hammer of Nazahn $15.63
1 Harrow $0.07
1 Helm of the Host $5.00
1 Heroic Intervention $8.47
1 Invigorate $0.15
1 Kodama's Reach $0.11
1 Loxodon Warhammer $0.12
1 Mortal's Resolve $0.07
1 Nature's Lore $0.08
1 Nissa, Vastwood Seer  Flip $
1 Overwhelming Stampede $1.61
1 Quicksilver Amulet $4.54
1 Rampant Growth $0.09
1 Rancor $0.27
1 Selvala's Stampede $3.25
1 Skyshroud Claim $1.19
1 Sol Ring $0.52
1 Summoning Trap $0.53
1 Swiftfoot Boots $0.22
1 Sword of Feast and Famine $0.31
1 Thought Vessel $0.18
1 Tooth and Nail $19.04
1 Traverse the Outlands $11.50
1 Triumph of the Hordes $7.99
1 Venser's Journal $4.89
1 Vernal Bloom $3.30
1 Zendikar Resurgent $3.76
99 Cards Main

Draw 7

Mana Curve

# of Cards
CMC
8x
1
6x
2
12x
3
12x
4
8x
5
5x
6
6x
7
1x
8
1x
9
1x
10
1x
11

Color Breakdown

Symbols
Color
72