Extravagant Replication + Notorious Throng + Donnie & April, Adorkable Duo

Extravagant Replication

Notorious Throng

Donnie & April, Adorkable Duo

How it works

1. Deal combat damage to an opponent using a Rogue.
2. Cast Notorious Throng for its prowl cost by paying 5, causing you to take an extra turn after this one.
3. Move to your next turn.
4. At the beginning of your upkeep, Extravagant Replication triggers, creating a token copy of Donnie & April.
5. Put the Donnie & April token into your graveyard due to the legend rule.
6. When the Donnie & April token enters the battlefield, it triggers, returning Notorious Throng from your graveyard to your hand.
7. Repeat.

By starting with a successful Rogue combat damage trigger, you are able to cast Notorious Throng for its prowl cost to take an extra turn. Once you reach the upkeep of that extra turn, Extravagant Replication triggers to create a token copy of Donnie & April, Adorkable Duo. The legend rule promptly sends this new token to your graveyard, but its enters-the-battlefield ability still triggers to fish Notorious Throng right back out of your graveyard and into your hand. This loop secures infinite turns, allowing you to repeat the process indefinitely.