Magar of the Magic Strings, Rise of the Eldrazi, and Dream Trawler

Prerequisites

• Magar of the Magic Strings on the battlefield
• Rise of the Eldrazi in hand
• Dream Trawler on the battlefield
• An opponent cannot block creatures you control
• available

Steps

1. Activate Dream Trawler by discarding Rise of the Eldrazi
2. Activate Magar by paying , noting Rise of the Eldrazi and putting it face down on the battlefield as a 3/3 creature
3. During your next turn, deal combat damage to an opponent using the 3/3 creature that has Rise of the Eldrazi noted
4. The creature triggers, casting a copy of Rise of the Eldrazi without paying its mana cost
5. Resolve the Rise of the Eldrazi copy, causing you to take an extra turn after this one
6. Repeat from step 3 during each turn

Results

• Infinite turns