Ethereal Absolution, and Humility

Prerequisites

• Ethereal Absolution on the battlefield
• Humility on the battlefield

Steps

1. Humility makes all creatures lose all abilities and sets their power and toughness to 1/1
2. Ethereal Absolution gives all opponent' creatures -1/-1
3. Creatues lose ETB and LTB abilities and opponent' creatures die when played

Results

• Opponent's creatures die when they enter the battlefield