Lagrella, the Magpie + Sun Titan + Altar of Dementia

Lagrella, the Magpie

Sun Titan

Altar of Dementia

How it works

1. Cast Lagrella by paying and commander tax, if applicable.
2. When Lagrella enters the battlefield, it triggers, exiling Sun Titan until Lagrella leaves the battlefield.
3. Activate Altar of Dementia by sacrificing Lagrella.
4. When Lagrella leaves the battlefield, Sun Titan is returned to the battlefield from exile.
5. When Sun Titan enters the battlefield, it and Lagrella triggers.
6. Resolve the Lagrella trigger, putting two +1/+1 counters on Sun Titan.
7. Resolve the Sun Titan trigger, returning Lagrella from your graveyard to the battlefield.
8. Repeat from step 2.
9. Resolve all Altar of Dementia abilities.