Unique abilities of commanders like Tergrid, Yuriko, and The Ur-Dragon offer strategic advantages in games
If you've already shuffled your Commander into your library, sucks to be you no seriously, it's a casual format and chances are your opponents will let you pull your Commander out and require a shuffle
The kind of art you use can have a large impact on how people perceive your cards
The controller of the plane card is the active player
Removing them one at a time with cards like [c]Assassins Trophy[/c] wont really be possible, but if you pay a bit more mana and cast something like [c]Cyclonic Rift[/c] for its overload cost, then all your problems will be taken care of with just one card
Im honestly pretty excited about this deck if only for the opportunity for some very novel plays: I think taking out an opponents fresh The Ur-Dragon before combat with a puny little Viscerid Drone is one of the funniest things you can do in Magic: the Gathering