The loss of efficiency of sideboarding is likely too high to allow you to play a deck this big, but Im not sure if its too high to allow for somewhere in the middle
Trusty Retriever This is much more flexible than previous options for White
They can also trigger negative effects ('Bugs'), such as causing Mega Man to lose health and move the wrong way, or causing the player to be unable to control it
Tons of powerful precon Commanders, like Terra, Herald of Hope and Teval, the Balanced Scale can easily add Liliana to their ranks, making this card an instant hit
That little bit of math stapled to some fairly staple effects should do great work in helping people chunk this cards modes
[/spoiler] He plots the ambushes of his crew, giving his master more protection