Altar of Dementia + Felidar Guardian + Rescue Skiff

Altar of Dementia

Felidar Guardian

Rescue Skiff

How it works

1. Cast Felidar Guardian by paying its mana cost.
2. When Felidar Guardian enters the battlefield, it triggers, targeting Rescue Skiff
3. Holding priority, activate Altar of Dementia by sacrificing Felidar Guardian.
4. Resolve the Felidar Guardian ability, blinking Rescue Skiff
5. When Rescue Skiff enters, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
6. Repeat from step 2.