Wormfang Manta, Mastery of the Unseen, and Shadow Guildmage

Prerequisites

• Wormfang Manta on the battlefield
• Mastery of the Unseen on the battlefield
• Shadow Guildmage on the battlefield
• Shadow Guildmage does not have summoning sickness
• available

Steps

1. Tap Shadow Guildmage for to put Wormfang Manta on top of your library
2. Wormfang Manta's LTB triggers, granting you an extra turn after this one
3. Activate Mastery of the Unseen for to manifest Wormfang Manta
4. Pay to turn it face up
5. Repeat for infinite turns

Results

• Infinite turns