Blightpaw

Haste, Double Strike, Hexproof
All blue and red creatures you control get a +1/+1
{t}: create a 1/2 blue monster with hexproof
{t}: create a 2/1 red monster with double strike
{u}{r}{t}: Sacrifice Blightpaw, create x 3/3 blue/red monsters with hexproof and double strike,
where x is the number of creatures on the battlefield including Blightpaw.