Cast Realm-Scorcher Hellkite by paying 4 and sacrificing an additional artifact, enchantment or token.
When Realm-Scorcher Hellkite enters the battlefield, it and Lathliss triggers.
Resolve the Realm-Scorcher Hellkite trigger, adding 2.
Resolve the Lathliss trigger, creating a 5/5 Dragon creature token.
Activate Ashnod's Altar by sacrificing Realm-Scorcher Hellkite, adding CC.
When Realm-Scorcher Hellkite dies, Enduring Renewal triggers, returning it to your hand from your graveyard.
Repeat.
This explosive loop hinges on feeding **Realm-Scorcher Hellkite** to **Ashnod's Altar** after it enters the battlefield bargained, netting extra mana from its initial trigger to help fund its casting costs. Thanks to **Enduring Renewal**, the Hellkite bypasses the graveyard entirely upon dying and bounces straight back to your hand, where you can recast it endlessly. Meanwhile, **Lathliss, Dragon Queen** watches the chaos unfold and fills your board with an army of 5/5 Dragon tokens every single time the Hellkite touches the battlefield.