Origin Spellbomb + Salvaging Station + Phyrexian Altar

Origin Spellbomb

Salvaging Station

Phyrexian Altar

How it works

1. Activate Origin Spellbomb by paying 1, tapping and sacrificing it, creating a 1/1 Myr artifact creature token.
2. Origin Spellbomb leaves the battlefield; choose not to pay for its trigger to draw a card.
3. Activate Phyrexian Altar by sacrificing the Myr, adding 1.
4. The Myr dies, triggering Salvaging Station, untapping Salvaging Station.
5. Activate Salvaging Station by tapping it, returning Origin Spellbomb from your graveyard to the battlefield.
6. Repeat.