Arazog, the Thought Eraser

After your draw step, if Arazog, the Thought Eraser is on the battlefield pay {2}, if you dont Sacrifice it.
Whenever an opponent casts a spell for the first time once per turn, they must pay 2 life and {2}, if they dont counter that spell.
Shroud, Untouchable ( this creature is unaffected my spells that dont directly target it.)