Xander, Crown Prince of Nohr

Battalion, Vigilance, Hexproof from Red
Class Change 4 (When this creature reaches X hero counters they are class changed until they leave play)
{2}{b},{t}: All creatures you control gain +1/+0 and vigilance until the end of the turn.
When Xander is class changed he gains Hexproof from White and his tap ability gains a new value of +2/+1.