Ligma

When Ligma enters the battlefield, destroy 10 blue permanents.
{b}{5}; give 4 creatures -5/-5
{r}{5}; Ligma deals 4 damage to 4 target permanents
{b}{b}{r}{r}{6}; target player gains control of Ligma
When another player gains control of Ligma, that player loses the game
When Ligma is destroyed or exiled, return it to the battlefield tapped