Sabertooth, Tiger

Indestructible, Infect
When Sabertooth, Tiger enters the battlefield
or attacks you become the monarch.
As long as Sabertooth, Tiger is on the battlefield,
change the total amount of poison counters
required to die, to 21 instead of 10. This effect
does not affect opponents.
As long as Sabertooth, Tiger is on the battlefield,
You can not die from having 21 points of
commander damage.