Turn 5 infinite combo. Bloodletter of Aclazontz has too many insta-kill combos to allow it to remain in standard.

The combination of Grievous Wound and Bloodletter of Aclazontz creates an infinite damage loop. This happens because each instance of damage causes the opponent to lose life, which then triggers additional damage from Bloodletter of Aclazontz, leading to more life loss, and so on.

As others have requested, please ban Aclazontz.