15 cards where the number of colors is 4

Set № Name ▲ Cost Type R La Artist USD EUR TIX
ZNR A-232 A-Omnath, Locus of Creation {1}{R}{G}{W}{U} Lgd. Creature M EN Chris Rahn
LTR 192 Aragorn, the Uniter {R}{G}{W}{U} Lgd. Creature M EN Javier Charro $4.71 €4.85 0.02
ONE 196 Atraxa, Grand Unifier {3}{G}{W}{U}{B} Lgd. Creature M EN Marta Nael $22.21 €24.04 4.23
2XM 190 Atraxa, Praetors' Voice {G}{W}{U}{B} Lgd. Creature M EN Victor Adame Minguez $16.53 €19.42 1.18
MH3 289 Breya, Etherium Shaper {W}{U}{B}{R} Lgd. Artifact Creature M EN Tiffany Turrill
GPT 110 Dune-Brood Nephilim {B}{R}{G}{W} Creature R EN Jim Murray $1.19 €0.31 0.02
DMC 152 Glint-Eye Nephilim {U}{B}{R}{G} Creature R EN Mark Zug $0.10 €0.11 0.15
GPT 117 Ink-Treader Nephilim {R}{G}{W}{U} Creature R EN Christopher Moeller $1.48 €0.37 0.02
C16 36 Kynaios and Tiro of Meletis {R}{G}{W}{U} Lgd. Creature M EN Willian Murai ✶ $19.72
ZNR 232 Omnath, Locus of Creation {R}{G}{W}{U} Lgd. Creature M EN Chris Rahn $7.79 €10.33 7.38
C16 41 Saskia the Unyielding {B}{R}{G}{W} Lgd. Creature M EN Greg Opalinski ✶ $3.11
SLD 1583 The Fourteenth Doctor {R/G}{W}{U} Lgd. Creature R EN Justyna Dura $46.66
GPT 138 Witch-Maw Nephilim {G}{W}{U}{B} Creature R EN Greg Staples $0.72 €0.29 0.02
C16 50 Yidris, Maelstrom Wielder {U}{B}{R}{G} Lgd. Creature M EN Karl Kopinski ✶ $4.75
GPT 140 Yore-Tiller Nephilim {W}{U}{B}{R} Creature R EN Jeremy Jarvis $0.62 €0.41 0.02

It is the moment of discovery, the triumph of the mind, and the end of these results.