Remembrance + Mortuary + Phyrexian Altar

Remembrance

Mortuary

Phyrexian Altar

How it works

1. Activate Phyrexian Altar by sacrificing the creature that can be cast using one colored mana, adding one mana of any color.
2. When the creature dies, Mortuary and Remembrance trigger.
3. Resolve the Mortuary trigger, putting the creature from your graveyard on top of your library.
4. Resolve the Remembrance trigger, searching your library for the creature and putting it into your hand.
5. Cast the creature by paying its mana cost.
6. Repeat.