Halo Fountain + Vizier of Tumbling Sands + Phyrexian Altar

Halo Fountain

Vizier of Tumbling Sands

Phyrexian Altar

How it works

1. Activate Vizier of Tumbling Sands by tapping it, targeting Halo Fountain.
2. Holding priority, activate Halo Fountain's first ability by paying , tapping it and untapping Vizier of Tumbling Sands, creating a 1/1 Citizen creature token.
3. Resolve the Vizier of Tumbling Sands ability, untapping Halo Fountain.
4. Activate Phyrexian Altar by sacrificing the Citizen token, adding .
5. Repeat.