The second reason big expensive creatures tend to underwhelm is the demands of match tempo
The bonus that the target creature receives is locked in as Fists of Flame resolves, counting the card drawn during its first effect
"Pokmon World Champions crowned in Hawaii"
A great way is turning the worst-case into the best case, by way of Electro, Assaulting Battery or Birgi, God of Storytelling Horn of Bounty
Both of those are are market price as well, compared to TCGplayer, so you're getting them at the best price possible
Samut, the Driving Force + Sprout Swarm Samut, the Driving Force requires you to reach max speed before it can make the buyback and convoke allow Sprout Swarms resulting creature token to pay for itself