Ghired, Mirror of the Wilds, Atla Palani, Nest Tender, Grimgrin, Corpse-Born, and Temur Ascendancy

Prerequisites

• Ghired, Mirror of the Wilds on the battlefield
• Atla Palani, Nest Tender on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• Temur Ascendancy on the battlefield
• available

Steps

1. Activate Atla by paying and tapping it, creating an 0/1 Egg creature token with defender
2. Activate a nontoken creature you control using the ability granted to it by Ghired by tapping it, creating a copy of the Egg token
3. Activate Grimgrin by sacrificing an Egg token
4. When the Egg dies, Atla triggers, causing you to reveal cards from the top of your library until you reveal a creature card and put it onto the battlefield
5. Resolve the Grimgrin ability, putting a +1/+1 counter on Grimgrin and untapping it Repeat from step 2
6. Activate Grimgrin by tapping it, creating a token copy of any creature token you control that entered the battlefield this turn
7. Activate Grimgrin by sacrificing the creature token created in step 1, untapping Grimgrin and putting a +1/+1 counter on it
8. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Near-infinite +1/+1 counters on a creature
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Put all creature cards from your library onto the battlefield tapped