This is a completely valid collecting philosophy and honestly the one that most long-term collectors eventually settle into
Pikachu P [SV-P 218](Promo Card Pack Pokemon Card Summer is Here
Alirios, Enraptured Anax, Hardened in the Forge Aphemia, the Cacophony Arasta of the Endless Web Ashiok, Nightmare Muse Ashiok, Sculptor of Fears Athreos, Shroud-Veiled Atris, Oracle of Half-Truths Calix, Destiny's Hand Callaphe, Beloved of the Sea Dalakos, Crafter of Wonders Daxos, Blessed by the Sun Elspeth, Sun's Nemesis Elspeth, Undaunted Hero Erebos, Bleak-Hearted Eutropia the Twice-Favored Gallia of the Endless Dance Haktos the Unscarred Heliod, Sun-Crowned Klothys, God of Destiny Kroxa, Titan of Death's Hunger Kunoros, Hound of Athreos Nylea, Keen-Eyed Nyx Lotus Polukranos, Unchained Purphoros, Bronze-Blooded Renata, Called to the Hunt Shadowspear Siona, Captain of the Pyleas Taranika, Akroan Veteran Thassa, Deep-Dwelling Thryx, the Sudden Storm Tymaret, Chosen from Death Uro, Titan of Nature's Wrath
![pokemon meganium card MEGA Mega ex SAR 761/742 MC Start Deck 100 Japan GLIT Japanese Hobby Shop [GGGG] Soothing Scent (40) The Defending Pokemon is now Asleep. Meganium 10 - ME01 Mega](https://tcgplayer-cdn.tcgplayer.com/product/87287_in_1000x1000.jpg)
This is to say that, despite the cost that each draw minimally impacts the composition of the rest of the deck, this deck probably has better mana than a 60-card deck with one less color (Im not sure how problematic needing to fetch four colors instead of three will actually be to how games play out)