Elderwood Spirit Guide

Sacrifice a creature: You gain 2 life.
{g}{u}, {t}: The next spell you cast this turn has affinity for beyond. (This spell costs {1} less to cast for each card you own in exile.)"
"Lend me your spirit, I shall empower the body. Lend me your body, I will enrich your soul. Behold, the eons of the Eldaar..." -Spirit Guide Offering