Abraxas, Laws Unmade

Flash
Abraxas, Laws Unmade's power and toughness are each equal to the number of Eldrazi on the battlefield.
When Abraxas, Laws Unmade enters the battlefield, exile {x} number of spells.
Whenever a player casts a spell, you may counter that spell. If you do, that player creates a number of colorless Eldrazi Scion creature tokens equal to the mana cost of that spell.