Honestly I dont know bout your maybe board, but id take out Riddleform. Brute Strength and Sure Strike can help put some pressure on the opponent and ive always enjoyed throwing Onward / Victory in here. (Might as well use the energy)Theyre great for sideboard at least to make this a really awesome tempo deck.

Invigorated Rampage also is a great strong card as well.

Invigorated Rampage is good, but with only one creature out it doesn't work great against removal. I'll consider it though.

Renegade Tactics over Crash Through in my opinion. I've been working a similar concept myself, though mine looks a little bit different than yours.

Attune with Aether just got Banned. :(. Probabaly replace it with some more Spell Pierces, Shocks or Opts and maybe some Crash Throughs.