Chains of Mephistopheles + Dredger's Insight + Lich's Mastery + Grave-Shell Scarab

Prerequisites

• You have a way to draw a card.

Steps

1. 1Attempt to draw a card.
2. 2The draw will be replaced by Chains of Mephistopheles, instead causing you to discard Grave-Shell Scarab. Then, the draw will be replaced by Grave-Shell Scarab's dredge ability, causing you to mill cards and return Grave-Shell Scarab from your graveyard to your hand.
3. 3Dredger's Insight's first ability triggers, causing you to gain 1 life.
4. 4Lich's Mastery triggers, attempting to draw a card.
5. 5Repeat from step 2.

Effects

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