Rootha, Mercurial Artist, Hellkite Courser, Krark-Clan Ironworks, and Saheeli's Artistry

Prerequisites

• Rootha, Mercurial Artist on the battlefield
• Hellkite Courser on the battlefield
• Krark-Clan Ironworks on the battlefield
• Saheeli's Artistry in hand
• available

Steps

1. Cast Saheeli's Artistry by paying , targeting Hellkite Courser
2. Holding priority, activate Rootha by paying and returning it to your hand, targeting Saheeli's Artistry
3. Choose to have Rootha returned to the command zone instead of your hand
4. Resolve the Rootha ability, copying Saheeli's Artistry, targeting Hellkite Courser
5. Resolve the copy of Saheeli's Artistry, creating a token copy of Hellkite Courser that is also an artifact
6. The Hellkite Courser token enters the battlefield, putting Rootha from the command zone onto the battlefield
7. Activate Krark-Clan Ironworks by sacrificing the Hellkite Courser token, adding
8. Repeat from step 2
9. Optionally, you may choose both modes of Saheeli's Artistry to create infinite tokens of any artifact(s) on the battlefield

Results

• Infinite colorless mana
• Infinite copies of any artifact(s) on the battlefield
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers