This allows decks to have access to powerful lockdown tools like Naturia Beast and Psy-Framelord Omega as long as they can make the levels of the monsters they wish to use for the summon of these cards equal the level of the monster that they wish to Synchro Summon
However, sometimes you have a bunch of mana that needs to be used for creatures and dont quite have ten for Ulamog, so I can see this being situationally good
On a personal level I have had 12 of the retro style and 2 of the neo ones
Thank you for visiting, let's go over this deck called: Synchron Stardust
Back in the OG 151, before Game Freak ran out of ideas and slapped eyes on a tree (go to hell Sudowoodo, you abomination, you grotesque mockery of nature, despicable, pitiable, blight granted some half-baked facsimile of life, may your bark peel and sap boil), Sandshrew evoked a beautiful simplicity of design