While aiming at something like my dream Bant planeswalkers build--not that I know exactly what shape that should take--this is what I've been working with so far without spending too much. It's been working pretty well, actually. It's not the result of very comprehensive analysis, though I did go through all the standard-legal cards with "enters the battlefield" in their text. A single copy of Venser, the Sojourner
has been the biggest expense, and I gradually added some of the dual lands. Unfortunately, the expensive lands are fairly important (adding some Misty Rainforest
would help further); before the "man lands" went in, it would too often be flooded with nothing to do.