There are plenty of cards that synergize with The Ur Dragon's matter-of-fact battle plan
From The Brothers War Commander comes Scavenged Brawler, an artifact creature with a pile of relevant abilities on a 4/4 body: flying, vigilance, trample, and lifelink
Did I miss your favorite dragon
Advanced Search Sets Random Syntax Adarkar Valkyrie Aegis Angel Akroma, Angel of Fury Akroma, Angel of Wrath Angel of Condemnation Angel of Deliverance Angel of Despair Angel of Finality Angel of Flight Alabaster Angel of Fury Angel of Glory's Rise Angel of Indemnity Angel of Jubilation Angel of Retribution Angel of Salvation Angel of the Dire Hour Angel of the Ruins Angelic Aberration Angelic Arbiter Angelic Captain Angelic Field Marshal Angelic Guardian Angelic Rocket Angelic Sell-Sword Angelic Skirmisher Angelic Sleuth Archangel Archangel of Strife Archangel of Wrath Astelli Reclaimer Aurelia, the Law Above Avacyn, Guardian Angel Avenging Angel Basandra, Battle Seraph Battlegrace Angel Blinding Angel Boon-Bringer Valkyrie Breathkeeper Seraph Bruna, the Fading Light Chancellor of the Annex Cleaving Reaper Copper-Leaf Angel Crypt Angel Dawnbreak Reclaimer Deathless Angel Desolation Angel Drana and Linvala Emeria Angel Emeria Shepherd Empyrial Archangel Errant and Giada Ethereal Valkyrie Exalted Angel Exemplar of Light Fallen Angel Feather, the Redeemed Filigree Angel Firemane Angel Firemane Avenger Firemane Commando Flameblade Angel Gabriel Angelfire Giada, Font of Hope Gisela, Blade of Goldnight Glorious Protector Guardian Seraph Guardian of Ghirapur Guiding Spirit Heavenly Blademaster Herald of Serra Herald of War Indomitable Archangel
Another is to focus on stealing them from your opponents
