Mercenary Action

Whenever a creature you control attacks alone,
you may pay {1}{w} and / or {1}{b}. If you pay
neither of these costs, draw a card and you lose
2 life.
If you paid {1}{w}, attacking creatures you control
get +1/+0 and gain first strike until end of turn.
If you paid {1}{b}, attacking creatures you control
get +1/+0 and gain lifelink until end of turn.