There is a human card called warpig it has 0 damage at first and when it is gains fly it gains +2 attack . The only ways a unit can fly is the artifact called "ring of flight" and a very rare spell called "levitate" but it lasts for 1 turn only , so mainly ring of flight . So is a squad consisted of warpigs viable lets see :
The following links were two succesfull 1s attemts from two players Pasquolli and MFDOOM :
The second one was more successfull [ consisted of Lyn artifacier (extremely rare ) , spell levitate ,3 warpigs and two ring of flight ], as the players reported they were wining 1 match out of 12 , so is warpig usefull ? hmm maybe not but wining even with that crazy squad can be fun .