Tsering,the undying

indestructible,flying
{r/w}:Tsering,the undying get +1/+0 until end of turn.
{b/g}:Tsering,the undying get +0/+1 until end of turn.
{2}{u}{u}:counter target spell.
If Tsering,the undying is in graveyard
Add poison counter on each opponent.
Player who have 7 or more poison counter lose the game.