Opposition Agent, Hive Mind, Mana Severance, and Selective Memory

Prerequisites

• Opposition Agent on the battlefield
• Hive Mind on the battlefield
• Mana Severance in hand
• Selective Memory in hand
• available

Steps

1. Cast Mana Severance by paying
2. Hive Mind triggers, causing each opponent to create a copy of Mana Severance
3. Resolve each opponent's Mana Severance, searching their libraries for all land cards, exiling them and shuffling their library
4. Resolve your Mana Severance, exiling no lands cards from your library and shuffling your library
5. Cast Selective Memory by paying
6. Hive Mind triggers, causing each opponent to create a copy of Selective Memory
7. Resolve each opponent's Selective Memory, exiling the rest of each opponent's library
8. Resolve your Selective Memory, exiling no nonland cards from your library and shuffling your library

Results

• Cast any number of spell(s) from opponents' libraries
• Exile all nonland cards from opponents' libraries
• Exile each opponent's library