Multi-element hydra

You can play {w}{w}{b}{b} to gain 5 life and deal 3 damage to planeswalker or player
You can pay{r}{r}{r}{r}{r}{r}{r}{r}{r}{r} to deal 5 damage to all opponents creatures
{ut}{g}{g}{g}{g}{g}{u}{u} to create 10 1/1 hydra heads