Isochron Scepter, The Blackstaff of Waterdeep, and Call to Glory

Prerequisites

• Isochron Scepter on the battlefield
• The Blackstaff of Waterdeep on the battlefield
• Call to Glory in exile
• Creatures you control can tap to produce at least
• available

Steps

1. Activate all mana-producing creatures you control by tapping them, adding at least
2. Activate The Blackstaff of Waterdeep by paying and tapping it, causing Isochron Scepter to become a 4/4 artifact creature
3. Activate Isochron Scepter by paying and tapping it, casting a copy of Call to Glory without paying its mana cost
4. Resolve Call to Glory, untapping all creatures you control
5. Activate all mana-producing creatures you control by tapping them, adding at least
6. Repeat from step 3

Results

• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures you control