Aaravos the fallen star

{3} discard a legendary card: put x +1+1 counters on target legendary creature you control it gains trample until the end of the turn where x is the discarded cards mana value.

{b/g}{b/r}{g/u}{r/g}{u/b}{u/r}:return up to two target legendary cards from your graveyard to the battle field.

This card can only be your commander if every card aside from basic lands in your deck is legendary.