Shalai and Hallar, Laelia, the Blade Reforged, and Virtue of Courage // Embereth Blaze

Prerequisites

• Shalai and Hallar on the battlefield
• Laelia, the Blade Reforged on the battlefield
• Virtue of Courage // Embereth Blaze on the battlefield
• You have a way to put a +1/+1 counter on a creature you control

Steps

1. Put a +1/+1 counter on a creature you control
2. Shalai and Hallar triggers, dealing that much damage to an opponent
3. Virtue of Courage triggers, causing you to exile that many cards from the top of your library
4. Laelia's second ability triggers, putting a +1/+1 counter on itself
5. Repeat from step 2

Results

• Exile your library
• Near-infinite +1/+1 counters on Laelia
• Near-infinite damage