The rest of your deck is not so resilient to a board wipe - and a board wipe can seriously set you back, though you can usually hold up a counterspell or two to protect your ninja army
The deck also runs Toothy, Imaginary Friend for sheer value
Purchasing starter decks and booster packs is a great way to begin, as these offer a good mix of cards that can be used both for gameplay and as the foundation for a collection
Unfortunately, this deck is quite weak with important Azorius cards missing, and the draw power requires you to work around specific requirements that often aren't worth it
Arguably, it doesnt belong in the 99 either, but some decks really like to sacrifice lands
New Phyrexia had a few infamous mechanics, such as Phyrexian Mana and Infect