Alas, much to its dismay, this attempt to make itself look more friendly failed, meaning that Mimikyu frequently grapples with loneliness
Warriors just don't have that kind of support, nor the critical mass of 1-drops, and the Boros theme seems to be centered around going tall with Equipment rather than going wide
If the leader is attacked and the attacker wins, the result depends on the opponent's life points
However a few do have "practical" uses - here are some examples: The particular card you reference, Garruk the Slayer, was created for the Magic 2015 prerelease and is used in a variant where one player plays normally and the other plays as Garruk
This is going deep, but the body is not offensive and that tap ability is going to make some big holes in people once we cast a Tezzeret