Marina Vendrell, Mirror Room // Fractured Realm, Opalescence, and Fires of Yavimaya

Prerequisites

• Marina Vendrell on the battlefield
• Mirror Room // Fractured Realm on the battlefield
• Opalescence on the battlefield
• Fires of Yavimaya on the battlefield
• Mirror Room is locked
• Fractured Realm is unlocked

Steps

1. Activate Marina by tapping it, unlocking Mirror Room
2. Mirror Room triggers twice
3. Resolve the first trigger, creating a token copy of Marina
4. Put the tapped Marina into your graveyard due to the legend rule
5. When the Marina token enters the battlefield, it's first ability triggers twice, causing you to look at the top seven cards of your library and put all enchantment cards from among them into your hand and the rest on the bottom of your library, and then repeat this once
6. Resolve the second Mirror Room trigger, creating a token copy of itself, as it is a creature due to Opalescence
7. Activate the Marina token by tapping it, unlocking the token Mirror Room
8. Repeat from step 2

Results

• Infinite ETB
• Infinite creature tokens with haste
• Put all enchantment cards from your library into your hand