Goldberry, River-Daughter + Thornbite Staff + Phyrexian Altar + Teysa Karlov + Geralf's Mindcrusher

Prerequisites

• Thornbite Staff attached to Goldberry.
• Goldberry does not have summoning sickness.
• Goldberry and Geralf's Mindcrusher do not have a +1/+1 counter on it.

Steps

1. 1Activate Phyrexian Altar by sacrificing Geralf's Mindcrusher, adding .
2. 2When Geralf's Mindcrusher dies, its undying ability and Goldberry trigger twice.
3. 3Resolve the first Geralf's Mindcrusher trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
4. 4When Geralf's Mindcrusher enters the battlefield, it triggers, causing a player to mill five cards.
5. 5Resolve the second Geralf's Mindcrusher trigger, doing nothing.
6. 6Resolve the first Goldberry trigger, untapping it.
7. 7Holding priority, activate Goldberry's first ability by tapping it, moving the +1/+1 counter from Geralf's Mindcrusher onto Goldberry.
8. 8Resolve the second Goldberry trigger from step 2, untapping it.
9. 9Activate Goldberry's second ability by paying and tapping it, moving the +1/+1 counter from Goldberry onto Teysa, and causing you to draw a card.
10. 10Repeat.

Effects

• Infinite card draw
• Infinite draw triggers
• Near-infinite +1/+1 counters
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Near-infinite mill