Remembrance + Deathrender + Arashin Sovereign + Bloodflow Connoisseur

Remembrance

Deathrender

Arashin Sovereign

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Arashin Sovereign.
2. When Arashin Sovereign dies, it, Deathrender and Remembrance trigger.
3. Resolve the Arashin Sovereign trigger, causing you to put it on top of your library from your graveyard.
4. Resolve the Remembrance trigger, causing you to search your library for Arashin Sovereign and put it into your hand.
5. Resolve the Deathrender trigger, putting Arashin Sovereign from your hand onto the battlefield, and attaching Deathrender to it.
6. Resolve the Bloodflow Connoisseur ability, putting a +1/+1 counter on it.
7. Repeat.

This clever recursive loop turns your dragon into an endlessly recycling engine, fueled by the relentless sacrifice outlet Bloodflow Connoisseur. Whenever you feed Arashin Sovereign to the Connoisseur, Deathrender steps in to instantly rescue it from the graveyard and sneak it straight back onto the battlefield from your hand, neatly facilitated by Remembrance fetching the Sovereign right back to your hand as it dies. As a bonus, Deathrender's static equipment buff keeps your Bloodflow Connoisseur growing indefinitely while Arashin Sovereign's own triggered ability politely ensures it is always available to be found again, yielding an endless cascade of enters-the-battlefield, death, and sacrifice triggers.