The Necrobloom, and Fluctuator

Prerequisites

• The Necrobloom on the battlefield
• Fluctuator on the battlefield

Steps

1. Activate the land's cycling ability by paying due to Fluctuator and discarding it, causing you to mill two cards and return the land from your graveyard to your battlefield due to the land's dredge ability
2. Repeat

Results

• Infinite self-mill
• Near-infinite self-discard triggers