The stat-line's bad and these two enters triggers are difficult to generate real value with
$100 Sample List The $100 list adds most of the remaining good proliferate cards: Contagion Engine, Inexorable Tide, Radstorm, and Staff of Compleation
The Twinflame gets an additional bonus since Fiendish Duo only doubles the damage dealt to players, while the Dragon is all damage done to opponents and permanents
With Rivals release, were getting a lot more creatures with Enrage, so you dont need to be all 3 colors to make sure you have enough support
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.) Illustrated by Viko Menezes Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Not Legal Comp
It doesnt quite generate the same usefulness for Blue as Blossoming Defense did for Green decks in the last Standard cycle, but hexproof allows this card to double as an effective one-drop counterspell against removal