37 cards where the cards were printed with new art and the set is “a25”

Angelic Page (Masters 25 #4)
Loyal Sentry (Masters 25 #22)
Path of Peace (Masters 25 #29)
Renewed Faith (Masters 25 #31)
Savannah Lions (Masters 25 #33)
Valor in Akros (Masters 25 #38)
Arcane Denial (Masters 25 #41)
Blue Elemental Blast (Masters 25 #43)
Exclude (Masters 25 #55)
Flash (Masters 25 #57)
Ghost Ship (Masters 25 #60)
Shoreline Ranger (Masters 25 #72)
Willbender (Masters 25 #78)
Dirge of Dread (Masters 25 #86)
Doomsday (Masters 25 #88)
Erg Raiders (Masters 25 #90)
Ihsan's Shade (Masters 25 #94)
Relentless Rats (Masters 25 #105)
Undead Gladiator (Masters 25 #112)
Unearth (Masters 25 #113)
Zombify (Masters 25 #116)
Balduvian Horde (Masters 25 #120)
Frenzied Goblin (Masters 25 #131)
Goblin War Drums (Masters 25 #133)
Imperial Recruiter (Masters 25 #136)
Pillage (Masters 25 #144)
Red Elemental Blast (Masters 25 #147)
Skirk Commando (Masters 25 #150)
Spikeshot Goblin (Masters 25 #152)
Broodhatch Nantuko (Masters 25 #162)
Elvish Aberration (Masters 25 #167)
Fierce Empath (Masters 25 #171)
Kavu Climber (Masters 25 #175)
Stangg (Masters 25 #218)
Coalition Relic (Masters 25 #223)
Ensnaring Bridge (Masters 25 #224)
Sundering Titan (Masters 25 #233)

Though this query has ended, its relics still slumber in New Argive.