Error importing deck?

I tried to import a deck that I'd just bought to arena and it showed up with a line that said "The input string contains an unknown card title Deftblade Elite" Heres the deck

Deck

4 Deftblade Elite

4 Sacred Cat

4 Loyal Cathar

4 Akroan Skyguard

4 Lagonna-Band Trailblazer

3 Emerge Unscathed

4 Cartouche of Solidarity

4 Ethereal Armor

4 Hyena Umbra

3 Benevolent Blessing

1 Spirit Link

1 Journey to Nowhere

2 Sentinel's Eyes

16 Plains

2 Secluded Steppe

Sideboard

2 Journey to Nowhere

4 Thraben Charm

4 Obsidian Acolyte

2 Spirit Link

1 Dust to Dust

1 Benevolent Blessing

1 Leave No Trace