Unstable Ether Combustion

On the 1st & 2nd turn that it is under your control, however after that everyone controls it.
{1}{t} Counter a random spell that was cast this turn.
{2}{t}Destroy a random non-legendary card.
{3}{t}Destroy a random legendary card.
{6}{t}Destroy a random player.
{2}{ut}Roll a dice on a roll of a 6 destroy it.
After it has been tapped 5 times destroy it. When it leaves the battlefield deal 2 damage to everything.