Marr, your deck doesn't win. It only draws. If you try to use accadian to damage him, he can swing back and outrace you. So you have to keep it back for defense and lose.
Sir Aureus's deck doesn't win. It only draws because if the other deck does nothing it can't play its only threat. If the other deck doesn't play a land, he can't drop his plotter without being outraced.
Sir Aureas, your deck actually doesn't beat his. Using peat bog means you can only activate Nezumi Shortfang once. So if he keeps both his seekers in hand until after you activate it, his seekers outraces your unflipped shortfang. The best your deck can do is force a tie.
Vedalken Plotter
Darksteel Sentinel
Mercadian Bazaar
Puncture Blast
Squee, Goblin Nabob
This deck does beat his though.
Mercadian Bazaar
Mercadian Bazaar
Beacon of Destruction
Make the archers into x2 Magus of the Candelabra
Ezuri's Archers
Ezuri's Archers
Hollow Trees
Sprout Swarm
Swamp
Rakdos Carnarium
City of Traitors
Skyhunter Prowler
bottomless vault
bottomless vault
Ulamog's Crusher
Beloved Chaplain
Beloved Chaplain
Commander Eesha
Accorder's Shield
Black Knight
Vampire Hexmage