The One Ring, Voltaic Construct, Skirge Familiar, and Karn, the Great Creator

Prerequisites

• The One Ring on the battlefield
• Voltaic Construct on the battlefield
• Skirge Familiar on the battlefield
• Karn, the Great Creator on the battlefield
• The One Ring has at least two burden counters on it and does not have summoning sickness

Steps

1. Activate Karn's first loyalty ability by putting a loyalty counter on it, causing The One Ring to become an artifact creature until end of turn
2. Activate The One Ring by tapping it, putting a burden counter on it and causing you to draw a card for each burden counter on it
3. Activate Skirge Familiar twice by discarding two cards, adding
4. Activate Voltaic Construct by paying , untapping The One Ring
5. Repeat from step 2

Results

• Infinite draw triggers
• Near-infinite black mana
• Near-infinite card draw
• Near-infinite looting
• Near-infinite self-discard triggers