Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Altar of Dementia by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Altar of Dementia ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Ashnod's Altar by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Phyrexian Altar by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Blasting Station by tapping it and sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it and Blasting Station trigger.
Resolve the Blasting Station trigger, untapping it.
Resolve the General Leo Cristophe trigger, returning Saffi from your graveyard to the battlefield.
When Saffi enters the battlefield, Blasting Station triggers, untapping Blasting Station.
Resolve the Blasting Station ability from step 2.
Repeat.

Cast Glasspool Mimic by paying its mana cost, choosing to have it enter the battlefield as a copy of General Leo Cristophe.
Put Glasspool Mimic into your graveyard due to the legend rule.
Glasspool Mimic's enter-the-battlefield ability triggers, returning Glasspool Mimic from your graveyard to the battlefield as a copy of General Leo Cristophe.
Repeat from step 2.

Cast Phantasmal Image by paying its mana cost, choosing to have it enter the battlefield as a copy of General Leo Cristophe.
Put Phantasmal Image into your graveyard due to the legend rule.
Phantasmal Image's enter-the-battlefield ability triggers, returning Phantasmal Image from your graveyard to the battlefield as a copy of General Leo Cristophe.
Repeat from step 2.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Viscera Seer by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Viscera Seer ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Carrion Feeder by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Carrion Feeder ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Goblin Bombardment by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Goblin Bombardment ability.
Repeat.

Cast Flesh Duplicate by paying its mana cost, choosing to have it enter the battlefield as a copy of General Leo Cristophe.
Put Flesh Duplicate into your graveyard due to the legend rule.
Flesh Duplicate's enter-the-battlefield ability triggers, returning Flesh Duplicate from your graveyard to the battlefield as a copy of General Leo Cristophe.
Repeat from step 2.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Yahenni by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Yahenni ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Bartolomé del Presidio by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Bartolomé del Presidio ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Umbral Collar Zealot by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Umbral Collar Zealot ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Thermopod by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Woe Strider by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Woe Strider ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Shilgengar by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Shilgengar ability.
Repeat.

Activate Saffi by sacrificing it, targeting General Leo Cristophe.
Activate Bloodflow Connoisseur by sacrificing General Leo Cristophe.
When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield.
When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Bloodflow Connoisseur ability.
Repeat.