Merchant can be but typically is more of a warped Seige Rhino
It eats into your few allowable colourless lands too
Those are just a few ideas off the top of my head
A Secret Lair gives you some good cards, but were going to go through how to build a Marvel MTG deck around the commanders, starting with Captain America, First Avenger Examining Captain America, First Avenger Our first step is to examine Cap, who is appropriately Red, White, and Blue (in a nice flavor nod, they rearranged the normal order of color display from blue, red, white to fit the traditional America order)
A timely Curious Herd is an incredible token generator, and the Twinning Staff helps turn your deck into a Xerox for instants