Naru Meha, Master Wizard, Grimgrin, Corpse-Born, and Stitch Together

Prerequisites

• Naru Meha, Master Wizard in hand
• Grimgrin, Corpse-Born on the battlefield
• Stitch Together in hand
• available

Steps

1. Cast Stitch Together by paying its mana cost
2. Holding priority, cast Naru Meha by paying its mana cost
3. When Naru Meha enters, it triggers, targeting Stitch Together
4. Holding priority, activate Grimgrin by sacrificing Naru Meha, putting a +1/+1 counter on Grimgrin and untapping it
5. Resolve the Naru Meha trigger, copying Stitch Together Resolve the Stitch Together copy, returning Naru Meha from your graveyard to the battlefield
6. Repeat from step 3

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers