Aveline de Grandpré Infinite Commander Damage

Step 1: Have Aveline de Grandpré and Kediss, Emberclaw Familiar on the battlefield.

Step 2: Equip General's Regalia.

Step 3: Attack with Aveline and deal combat damage to an opponent.

Step 4: Kediss triggers, dealing the same amount of damage to each other opponent.

Step 5: Use General's Regalia to redirect damage back to Aveline.

Step 6: Use Obelisk of Undoing to return General's Regalia to your hand and equip it again.

Repeat Steps 3-6 indefinitely, dealing infinite damage to all opponents.