There are a lot of scary creatures out there that want to get in damage without being blocked, and while the Halfling discount is really good, don't discount that this card can end a game really fast if it gets onto something else for 4 mana
The standard plan of running small cheap ramping creatures and then ramming out an End-Raze Forerunners to pump all your creatures and just instantly overwhelm your opponents is a pretty well understand strategy
If you do, this creature assigns no combat damage this turn
This can definitely be a beater, but repeatable discard around a full table if this survives a turn cycle is still pretty fun, especially if you madness it out
Ravaging Blaze Initially, Ravaging Blaze can just be used to deal damage to creatures, but with spell mastery, you get to also deal damage to that creature's controller