Flamewaker scares me. I am having mad flashbacks to my first few run-ins against a after Goblins vs Gnomes released. The trigger for Blastmage is different, but I can see the impact of Flamewaker being just as strong for a Mage’s earlier game. Granted there aren't really any 1-Mana spells that are seeing a whole lot of play right now from Mages. But the dream scenario of a Turn-3 Flamewaker, , then for a total of 7 random damage is enough to make me want to try it.
Perfect combinations aside, I think Flamewaker is still going to be a powerhouse. A 2/4 for 3 Mana is perfectly acceptable. Unbuffed 2-drop minions can’t trade up against it (unless your opponent is running or in which case I applaud their gumption). Played on Turn 3 it’s 4 Health gives it a good chance at surviving a lot of early-game weapons and minions. Drawn later, it can be played the same turn as another high-impact spell (like or ) to push board control heavily in a Mage’s favor or deal those last 2 points of lethal damage against an empty board. The 2 random damage effect happens after the spell is cast. This means board clears like (and the frequently forgotten ) deal board-wide damage first, then Flamewaker assigns 2 random damage. No wasted damage on minions that would have died to the board clear anyway.