Obelisk, The Tormentor

Regenerate {3}{p/g}, Trample, Vigilance & Offering
If you sacrifice your commanders for Offering,
their commander tax is not increased.
When casting this creature with Offering and/or
when you Regenerate it, you may destroy target permanent an opponent controls. If you control
a commander destroy another permanent. If you
control both it also gains Annihilator 3 & Reach.