55 cards where the cards have the “planeswalker” watermark

Anointed Procession (AKH)
Assassin's Trophy (GRN)
Augur of Bolas (PWAR)
Battle at the Bridge (AER)
Broken Bond (DOM)
By Force (AKH)
Captured by the Consulate (KLD)
Cast Down (PDOM)
Conclave Tribunal (PGRN)
Confiscation Coup (KLD)
Consulate Crackdown (AER)
Cruel Reality (AKH)
Dark Intimations (AER)
Deadlock Trap (KLD)
Disallow (AER)
Dovin's Veto (PWAR)
Elvish Rejuvenator (PM19)
Emergency Powers (RNA)
Ethereal Absolution (RNA)
Fateful Showdown (KLD)
Final Parting (DOM)
Firemind's Research (GRN)
Flood of Recollection (RIX)
Gideon's Intervention (AKH)
Growth Spiral (PRNA)
Guild Summit (GRN)
Hour of Devastation (HOU)
Hour of Eternity (HOU)
Hour of Glory (HOU)
Hour of Promise (HOU)
Hour of Revelation (HOU)
In Bolas's Clutches (DOM)
Induced Amnesia (RIX)
Inventors' Fair (KLD)
Ixalan's Binding (XLN)
Kaya's Wrath (RNA)
Light Up the Stage (PRNA)
Mastermind's Acquisition (RIX)
Militia Bugler (PM19)
Mortify (PRNA)
Murder (PM19)
Opt (PDOM)
Paradise Druid (PWAR)
Perilous Voyage (XLN)
Pia's Revolution (AER)
Rampage of the Clans (RNA)
Renewed Faith (AKH)
River's Rebuke (XLN)
Settle the Score (DOM)
Shanna, Sisay's Legacy (PDOM)
Sinister Sabotage (PGRN)
Thaumatic Compass // Spires of Orazca (XLN)
Thaumatic Compass // Spires of Orazca (XLN)
Thought Erasure (PGRN)
Thousand-Year Storm (GRN)
Vraska's Contempt (XLN)

This search is finished. Now the real work can begin.