Brallin, Skyshark Rider, and Tandem Lookout

Prerequisites

• Brallin, Skyshark Rider on the battlefield
• Tandem Lookout on the battlefield
• Tandem Lookout is paired with Brallin
• You have a number of cards in hand greater than your maximum hand size
• You have more cards in library than the sum of each opponent's life total

Steps

1. During your cleanup step, discard to your maximum hand size
2. Brallin triggers for each card discarded, getting a +1/+1 counter and dealing 1 damage to each opponent
3. Brallin's ability from Tandem Lookout triggers, causing you to draw a card for each damages done to each opponent
4. Pass priority, moving to an additional cleanup step
5. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite +1/+1 counters on Brallin
• Near-infinite damage
• Near-infinite self-discard triggers