Najeela, the Blade-Blossom, Spellbinder, Mycosynth Lattice, and Seething Song

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Spellbinder on the battlefield
• Mycosynth Lattice on the battlefield
• Seething Song in exile
• Spellbinder attached to Najeela
• Najeela does not have summoning sickness
• An opponent is unable to block and kill Najeela

Steps

1. Declare Najeela as an attacker
2. Najeela triggers, creating a 1/1 Warrior creature token that is tapped and attacking
3. Deal combat damage to an opponent with Najeela
4. Spellbinder triggers, casting a copy of Seething Song without paying its mana cost
5. Resolve Seething Song, adding
6. Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one

Results

• Infinite combat damage
• Infinite combat phases
• Infinite creature tokens with haste
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite magecraft triggers
• Infinite storm count