For Demolition Field, I don't know if I'd said this yet on TappedOut, but I'm of the oppinion that each and EVERY deck needs some form of land removal
Maindeck Boseiju may seem a little out of the ordinary, but its the card that allows you to consistently beat blue control decks
But its the Vehicles that hold the most interest, not only as repeatable tap opportunities but as ways of dealing damage that survive board sweepers, which is important for any Selesnya deck
If you order the stack correctly, you can even get more than one extra combat on each loop, as Isshin doubles the land untapping effect in time for you to pay for Aggravated Assault again
The first ability allows you to create a 1/1 Elf Druid creature Token, the second allows you to destroy any targeted artifact or enchantment to control the board and the final provides you with a ridiculous draw engine which draws you a card for each green creature you control