Roalesk, Apex Hybrid, Blade of Shared Souls, Herd Baloth, and Crystalline Crawler

Prerequisites

• Roalesk, Apex Hybrid on the battlefield
• Blade of Shared Souls on the battlefield
• Herd Baloth on the battlefield
• Crystalline Crawler on the battlefield
• You control at least one additional creature
• Crystalline Crawler has at least one +1/+1 counter on it
• available

Steps

1. Activate Blade of Shared Souls' equip ability by paying , attaching it to another creature you control
2. Blade of Shared Souls triggers, causing the creature it is attached to to become a copy of Roalesk
3. Put the creature with Blade of Shared Souls attached into your graveyard due to the legend rule
4. The creature triggers, putting two +1/+1 counters on Herd Baloth and Crystalline Crawler
5. Herd Baloth triggers twice, creating two 4/4 Beast creature tokens
6. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding
7. Repeat

Results

• Infinite +1/+1 counters on Herd Baloth
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite proliferate
• Infinite sacrifice triggers