Configuration 1 Booster Pack: x 10 cards 1 Display Box: x 20 packs 1 Case: x 10 Display Boxes
On paper, that is a good strategy because his field spell, Ancient City - Rainbow Ruins, gains increasingly powerful effects for each one, and if the backrow is full can summon a monster from there each turn, and if it happens to be Ruby Carbuncle it will result in a massive advantage
Since each belongs to 2 of the original Onomat archetypes (or all 4 in the case of Utopic Onomat), their effects synergize really well with each other, meaning if you have 2+ unique Onomat Monsters, all of them can be Summoned to the field on that turn.
Serperior Scatterbug Talonflame Sky Hunt may not be a serious enough of an ability to warrant running this Stage 2 Pokemon in your deck, but its still a neat mechanic that could be fun in control decks
In addition, Dark Magician has many different artworks across cards that showcase the true power that the monster holds