Leonidas, Silver Tongued

When Leonidas, Silver Tongued enters the battlefield you may look at each opponent's hand
and exile a creature from it. You may cast each
creature exiled this way with mana as if it was
mana of any color.
Spells cost {1} less to cast if you don't own them.
{w}{r}, {t}: Target creature you control
gains +3/+0 or +0/+3