Bloodsoaked Sliver

Sliver creature cards in your hand have "Bloodrush - {1}{r}{r}, Discard this card: Target attacking creature gets +X/+Y until end of turn, where X is this creature's power and Y is this creature's toughness."
Bloodrush - {1}{r}, Discard Bloodsoaked Sliver: Target attacking creature gets +2/+2 until end of turn.