The Ur-dragon deck tech v2

excuse the blurness in the planewalker part... camera refused to focus! another Ur dragon video with upgrades! this build has gone undefeated at some tournaments, deck list below:
The Ur-dragon
LANDS:
3 mountains
2 forest
3 swamps
2 plains
2 islands
unclaimed territory
command tower
exotic orchard
reflecting pool
city of brass
path of ancestry
ancient ziggurat
haven of the spirit dragon
the world tree
sacred foundry
stomping ground
llanowar wastes
dragonskull suimmit
temple garden
caves of koilos
yavimaya coast
sea of clouds
cascade bluffs
steam vents
water grave
hallowed fountain
godless shrine

ARTIFACTS:
expedition map
arcane signet
dragon's hoard
herald's horn
lightning greaves
chromatic lantern
soul ring

INSTANTS
eladamri's call
cyclonic rift
sarkhan's triumph

SORCERIES
bring to light
crux of fate
search for tomorrow
cultivate
farseek
rampant growth
kodama's reach

ENCHANTMENTS
dragon tempest
sneak attack
the prismatic bridge
temur ascendancy
lurking predators
pattern of rebirth
smothering tithe

PLANESWALKER
kiora, behemoth beckoner
sarkham unbroken
sivitri, dragon master

CREATURES
surrak dragonclaw
savage vetma
scaled nurturer
utvara hellkite
birds of paradise
dragonlord silumgar
beledros witherbloom
ramos, dragon engine
sylvia brightspear
rivaz of the claw
tiamat
solemn simulacrum
numot, the devastator
hellkite charger
klauth, unrivaled ancient
atarka, world render
scourge of the throne
deathbrindger regent
keiga, the tide star
terror of the peaks
dragonmaster outcast
hellkite courser
thrakkus the butcher
scalelord recknor
scion of the urdragon
balrefire dragon
miirym, sentinel wyrm
goldspan dragon
faeburrow elder
realmwalker
drakuseth, maw of flames
ziatora, the incinerator
kaalia of the vast
dragonlord dromoka
crosis, the purger
dragonlord's servant
dragonspeaker shaman
morophon, the boundless