Broken Strategies

Whenever a player discards an instant or sorcery card, you may cast that card without paying its mana cost, you lose life equel to its converted mana cost.
{w/b}{w}, Draw a card, discard two cards.
{u/b}{u},Target player discards a card at random.
{w/u}{b}, Gain 1 life for every card discarded this turn.