Urza, Lord Protector, The Mightstone and Weakstone, Ghostly Flicker, and Archaeomancer

Prerequisites

• Urza, Lord Protector on the battlefield
• The Mightstone and Weakstone on the battlefield
• Ghostly Flicker in hand
• Archaeomancer on the battlefield

Steps

1. Activate Urza, Planeswalker's first loyalty ability by putting two loyalty counters on it, causing instant spells you cast this turn to cost less and causing you to gain two life
2. Activate a basic Island by tapping it, adding
3. Cast Ghostly Flicker by paying , blinking Archaeomancer and a basic Island
4. Archaeomancer enters the battlefield, returning Ghostly Flicker from your graveyard to your hand
5. Repeat from step 2

Results

• Infinite ETB
• Infinite landfall triggers
• Infinite LTB
• Infinite magecraft triggers
• Infinite storm count