Prerequisites
- Chromatic Orrery on the battlefield
- Halo Fountain on the battlefield
- Sydri, Galvanic Genius on the battlefield
- Halo Fountain and Chromatic Orrery do not have summoning sickness
- available
Steps
- Activate Sydri's first ability by paying , causing Halo Foutain to become a creature
- Activate Sydri's first ability by paying , causing Chromatic Orrery to become a creature
- Activate Chromatic Orrery's first ability by tapping it, adding
- Activate Halo Fountain's second ability by paying and tap, untapping Chromatic Orrery and itself
- Repeat from step 3
Results
Required Cards 3
Chromatic Orrery
Legendary Artifact
Sydri, Galvanic Genius
Legendary Creature — Human Artificer