Mezhra Hadu, Grand Mobilizer

As long as you control another creature, Mezhra Hadu, Grand Mobilizer can't deal damage and can't be removed from the battlefield. (It can't be destroyed, exiled or otherwise moved to another zone from the battlefield.)
Other creatures you control get +1/+1, have vigilance and impunity, and enter the battlefield with an additional +1/+1 counter on them. (As long as they are untapped, spells your opponents cas