The Mightstone and Weakstone Combos

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


Combo result
Infinite ETB. Infinite LTB. Infinite storm count.
Prerequisites

Ancestral Statue in hand. All other permanents on the battlefield. Urza, Lord Protector and The Mightstone and Weakstone melded into Urza, Planeswalker.

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


Combo result
Infinite ETB. Infinite LTB. Infinite storm count. Infinite magecraft triggers. Infinite landfall triggers.
Prerequisites

Ghostly Flicker in hand. All permanents on the battlefield. Urza, Lord Protector and The Mightstone and Weakstone melded into Urza, Planeswalker. You control a basic Island.

Urza, Lord Protector + The Mightstone and Weakstone + The Chain Veil


Combo result
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite activations of loyalty abilities of all other Planeswalkers you control.
Prerequisites

All permanents on the battlefield. Urza, Lord Protector and The Mightstone and Weakstone melded into Urza, Planeswalker.