Once you have the poison engine going, Brimaz effectively turns all your Phyrexians into rattlesnakes, since using even just one to chump-block means that you get to proliferate at the next end step
The franchise explores themes of justice, bravery, and the fight against oppression
It more than makes up for it by allowing you to repeatedly steal creatures
Gone are the days people would run commanders just because they were the colours they wanted access to Card advantage every top commander provides card advantage in some way, whether its literally drawing cards, card selection via scrying or similar, bringing cards back from the graveyard, tutoring, or even producing permanents such as tokens
Baleful Strix I really, really like Baleful Strix
Cube designers can have an easy time implementing an artifact theme into green without polluting the draft environment at large