Obelisk the Tormentor

This Spell can't be countered.
Shroud, Trample, Vigilance, Haste
If Obelisk the Tormentor enters the battlefield, but wasn't cast, sacrifice him at the beginning of the next End Step.
Sacrifice 2 creatures: Activate only as a sorcery.
Choose one:
• Destroy all creatures your opponents control.
• Obelisk deals 10 damage to up to one target.
• Obelisk gains +10/+0 until the next End Step.