The Mightstone and Weakstone + Urza, Lord Protector Combos

8 known combos featuring both cards in Commander

Infinite ETB Infinite LTB Infinite storm count Infinite activations of most planeswalkers Infinite death triggers

Combo 1 with Ghostly Flicker + Archaeomancer

Results: Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite magecraft triggers · Infinite storm count
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 {2} less and causing you to gain two life.
  2. Activate a basic Island by tapping it, adding {U}.
  3. Cast Ghostly Flicker by paying {U}, 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.

Combo 2 with Ancestral Statue

Also requires: Ancestral Statue Ancestral Statue
Results: Infinite ETB · Infinite LTB · Infinite storm count
Show steps
  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.

Combo 3 with Ghostly Flicker + Mnemonic Wall

Results: Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite magecraft triggers · Infinite storm count
Show 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 {2} less and causing you to gain two life.
  2. Activate a basic Island by tapping it, adding {U}.
  3. Cast Ghostly Flicker by paying {U}, blinking Mnemonic Wall and a basic Island.
  4. Mnemonic Wall enters the battlefield, returning Ghostly Flicker from your graveyard to your hand.
  5. Repeat from step 2.

Combo 4 with The Chain Veil + Clock of Omens + Krark-Clan Ironworks

Results: Infinite activations of most planeswalkers · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Urza, Planeswalker's third loyalty ability by putting no loyalty counters on it, creating two 1/1 Soldier artifact creature tokens.
  2. Activate Clock of Omens by tapping the two Soldiers, untapping The Chain Veil.
  3. Activate Krark-Clan Ironworks twice by sacrificing the two Soldiers, adding {C}{C}{C}{C}.
  4. Activate The Chain Veil by paying {4} and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn.
  5. Repeat.

Combo 5 with The Chain Veil + Clock of Omens + Ashnod's Altar

Results: Infinite activations of most planeswalkers · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Urza, Planeswalker's third loyalty ability by putting no loyalty counters on it, creating two 1/1 Soldier artifact creature tokens.
  2. Activate Clock of Omens by tapping the two Soldiers, untapping The Chain Veil.
  3. Activate Ashnod's Altar twice by sacrificing the two Soldiers, adding {C}{C}{C}{C}.
  4. Activate The Chain Veil by paying {4} and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn.
  5. Repeat.

Combo 6 with Ghostly Flicker + Salvager of Secrets

Results: Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite magecraft triggers · Infinite storm count
Show 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 {2} less and causing you to gain two life.
  2. Activate a basic Island by tapping it, adding {U}.
  3. Cast Ghostly Flicker by paying {U}, blinking Salvager of Secrets and a basic Island.
  4. Salvager of Secrets enters the battlefield, returning Ghostly Flicker from your graveyard to your hand.
  5. Repeat from step 2.

Combo 7 with The Chain Veil + Dross Scorpion + Ashnod's Altar

Results: Infinite activations of most planeswalkers · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana artifacts you control can produce · Infinite sacrifice triggers · Infinite untap of artifacts you control
Show steps
  1. Activate Urza, Planeswalker's third loyalty ability by putting no loyalty counters on it, creating two 1/1 Soldier artifact creature tokens.
  2. Activate Ashnod's Altar twice by sacrificing the two Soldiers, adding {C}{C}{C}{C}.
  3. The Soldiers die, triggering Dross Scorpion twice, untapping The Chain Veil and any other artifact you control.
  4. Activate The Chain Veil by paying {4} and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn.
  5. Repeat.

Combo 8 with The Chain Veil + Dross Scorpion + Krark-Clan Ironworks

Results: Infinite activations of most planeswalkers · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana artifacts you control can produce · Infinite sacrifice triggers · Infinite untap of artifacts you control
Show steps
  1. Activate Urza, Planeswalker's third loyalty ability by putting no loyalty counters on it, creating two 1/1 Soldier artifact creature tokens.
  2. Activate Krark-Clan Ironworks twice by sacrificing the two Soldiers, adding {C}{C}{C}{C}.
  3. The Soldiers die, triggering Dross Scorpion twice, untapping The Chain Veil and any other artifact you control.
  4. Activate The Chain Veil by paying {4} and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn.
  5. Repeat.
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