Saheeli's Artistry, and Dualcaster Mage

Prerequisites

• Saheeli's Artistry in hand
• Dualcaster Mage in hand
• At least one creature on the battlefield under any player's control
• available

Steps

1. Cast Saheeli's Artistry by paying , targeting any creature plus an artifact if possible
2. In response, cast Dualcaster Mage by paying
3. When Dualcaster Mage enters the battlefield, it triggers, copying Saheeli's Artistry and choosing Dualcaster Mage (and any artifact if possible) as the new target
4. Let the copy of Saheeli's Artistry resolve, creating a copy of Dualcaster Mage (and any artifact if possible)
5. Repeat from step 2

Results

• Infinite copies of artifacts
• Infinite creature tokens
• Infinite magecraft triggers