Hokra, the Healing Flame

Red and White spells you cast cost {1} less to cast.
Whenever you cast white spell, you may gain 2 life. If you do, target player loses 2 life.
Whenever you cast a red spell, you may deal 3 damage to target creature. If you do and that creature dies this way, you lose 2 life.
"Would you like to hurt? Or should I just make you vulnerable?"