Cavalier of Night + Glasspool Mimic // Glasspool Shore + Phyrexian Altar

Cavalier of Night

Glasspool Mimic // Glasspool Shore

Phyrexian Altar

How it works

1. Activate Phyrexian Altar by sacrificing Glasspool Mimic, adding one mana of any color.
2. When Glasspool Mimic dies, its last ability from Cavalier of Night triggers, returning itself from your graveyard to the battlefield as a copy of Cavalier of Night.
3. When Glasspool Mimic enters the battlefield, its first triggered ability from Cavalier of Night triggers; choose not to sacrifice a creature.
4. Repeat.