Argavos, The Spirit Guide

{x}{w}, {t}: Put target Spirit creature with
converted mana cost X from exile onto the
battlefield.
{x}{u}, {t}: Discard a spirit creature from
your hand, draw cards equal to the
creature's converted mana cost.
{x}{g}, {t}: Exile target Spirit creature from
your graveyard with converted mana cost
X, then put X +1/+1 counters on target
creature you control.