Boros Insider

If an opponent would cast a red spell, you may pay 1 life. If you do, target creature you contol get +1/+0 and haste until end of turn.
If an opponent would cast a white spell, you may pay 1 life. If you do, target creature you contol has base attack and toughness 0/5 and gains protection from a color of your choice until end of turn.