One of the most popular monsters summoned with Magical Scientists effect, outside of explicit Light/Dark fodder for chaos monsters, was Thousand-Eyes Restrict
As you can only use 1 Skill in your deck, deciding which Skill to use becomes a big factor in constructing your Deck for Speed Dueling.
if the player has to wait until the opponent has three attack position monsters on the field, then it will probably be too late as the player will have already lost a lot of life points over the previous rounds
I plan on getting them graded once PSA opens back up
While his ability does not serve to add cards to graveyards, many Rogues do, and, for that reason he is a big staple in Rogue Commander decks
Some version of about half of these effects stuck around