Isochron Scepter + Psychic Puppetry + Desperate Ritual + Zirda, the Dawnwaker

Isochron Scepter

Psychic Puppetry

Desperate Ritual

Zirda, the Dawnwaker

How it works

1. Activate Isochron Scepter for 1.
2. Splice Desperate Ritual onto Psychic Puppetry for 1, and have Psychic Puppetry target Isochron Scepter.
3. Resolve the spell, untapping Isochron Scepter and adding .
4. Repeat as necessary, using to pay for the Isochron Scepter activation and for Desperate Ritual.