deck validation

Is there a way to validate a deck? I have a deck that looks fine to me in the deck builder, but then doesn't show up when I go to duel. Is there a way of knowing what the problem is?
Here's the deck, for reference:
Here's the deck, for reference:
- Code: Select all
;bad deck
;
;Underdogs
;no.spam@plea.se
;11/05/2009
;1
;4th Edition
;
.1348 2 Thunderscape Apprentice
.18 1 Black Vise
.308 1 Coal Golem
.1192 1 Worship
.673 1 Horn of Deafening
.1050 1 Grave Pact
.1321 1 Diplomatic Immunity
.992 1 Choke
.1816 1 Wirewood Symbiote
.178 1 Orcish Oriflamme
.707 1 Lady Evangela
.1706 1 Master of Etherium
.116 1 Hurricane
.1765 1 Bringer of the Blue Dawn
.487 2 Crumble
.574 1 Order of the Ebon Hand
.1427 1 Allay
.720 1 Mana Drain
.1606 1 Pincher Beetles
.1155 1 Spiketail Hatchling
.221 1 Serra Angel
.621 1 Elder Spawn
.3 1 Animate Dead
.173 1 Nevinyrral's Disk
.274 1 Wall of Water
.1579 1 Malach of the Dawn
.240 1 Swords to Plowshares
.1841 1 Browbeat
.326 1 Ghost Ship
.1625 1 Stromgald Crusader
.547 1 Xenic Poltergeist
.385 1 War Barge
.1534 1 Goblin Settler
.1843 1 Ravages of War
.97 1 Giant Growth
.966 1 Glorious Anthem
.663 1 Gwendlyn Di Corci
.798 1 Storm Seeker
.1248 1 Heartbeat of Spring
.16 1 Black Knight
.825 1 Tuknir Deathlock
.1229 1 Glimmering Angel
.391 1 Abu Ja'far