Repository Skaab, Karador, Ghost Chieftain, and Time Warp

Prerequisites

• Repository Skaab in hand or in the graveyard
• Karador, Ghost Chieftain on the battlefield
• Time Warp in hand
• each turn available

Steps

1. Cast Time Warp by paying its mana cost, causing you to take an extra turn after this one
2. Cast Repository Skaab either from your hand or from your graveyard by paying
3. When Repository Skaab enters, its exploit ability triggers, causing you to sacrifice it
4. Repository Skaab's second ability triggers, returning Time Warp from your graveyard to your hand
5. Repeat each turn

Results

• Infinite turns
• Lock