Elite Arcanist, Seething Song, Mycosynth Lattice, and Pemmin's Aura

Prerequisites

• Elite Arcanist on the battlefield
• Seething Song in exile
• Mycosynth Lattice on the battlefield
• Pemmin's Aura on the battlefield
• Pemmin's Aura attached to Elite Arcanist
• Elite Arcanist does not have summoning sickness
• available

Steps

1. Activate Elite Arcanist's ability by paying and tapping it, casting a copy of Seething Song without paying its mana cost
2. Resolve Seething Song, adding
3. Activate Pemmin's Aura's first ability by paying , untapping Elite Arcanist
4. Repeat

Results

• Infinite colored mana
• Infinite magecraft triggers
• Infinite storm count