Atla Palani, Nest Tender, Bartolomé del Presidio, and Leyline of Transformation

Prerequisites

• Atla Palani, Nest Tender on the battlefield
• Bartolomé del Presidio on the battlefield
• Leyline of Transformation on the battlefield

Steps

1. Activate Bartolomé del Presidio by sacrificing another creature
2. When the creature dies as an Egg due to Leyline of Transformation, Atla triggers, revealing a creature card from your library and putting it onto the battlefield
3. Resolve the Bartolomé del Presidio ability
4. Repeat as desired / able

Results

• Near-infinite +1/+1 counters on a creature
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite death triggers
• Near-infinite sacrifice triggers
• Put all creature cards in your library onto the battlefield, then into your graveyard