Yang the Light Caster

+2: Yin the Light Caster deals 4 damage to target Creature or Player. You gain that much life.
-3: Yin the Light Caster gives all friendly minions +4 health and gives a -3-3 counter on all enemy creatures
-7: Yin the Light Caster Gives you +10 HP and becomes a 10/4 Swordsman with Trample and Haste.