Urza, Lord Protector + The Mightstone and Weakstone + Ancestral Statue

Urza, Lord Protector

The Mightstone and Weakstone

Ancestral Statue

How it works

1. Activate Urza, Planeswalker's first loyalty ability by putting two loyalty counters on it, causing artifact spells you cast this turn to cost 2 less and causing you to gain two life.
2. Repeat step 1 one additional time.
3. Cast Ancestral Statue by paying 0.
4. Ancestral Statue enters the battlefield, returning itself from the battlefield to your hand.
5. Repeat from step 3.