Odbehrt, Veteran Tactitian

Double Strike, Promote (Whenever another creature you control leaves the battlefield, if that creature had greater base power than this creature's power, put a +1/+1 counter on this creature.)
{1}{w}{r}: Creatures you control gain Vigilance and Vanguard (Whenever this creature attacks for the first time each turn, after this phase, there is an additional combat phase.) Sacrifice a creature at random at the beginning of your end step.