You also need to make sure you hit your land drops, either with draw effects (Qiqirn Merchant and Adventurers Airship provide usable bodies as well as draw smoothing) or cards that directly give you lands or mana (World Map, landcyclers, Blitzball)
More Unicorns please
Check out the four face cards of the decks in this treatment
Of the 5,346 Indoraptor decks that have been logged on EDHREC, 958 of them (about 18%) were created in the last month
To make a deck like this work, you need a way to deal damage to your own creatures when you want (Walking Ballista, Pyrohemia, Lightmine Field, Staff Of Nin, or even Prodigal Pyromancer cards), you need creatures that will trigger for being dealt damage, and you need a way to control the incoming damage so you arent losing creatures you dont want to (such as to a Skullcrack or similar effect, or an early Star Of Destruction)