Almost all Beta cards will show these dots, the known exceptions are Volcanic Island, COP: Black, and Red Elemental Blast
You can find all of the cards in golden age, art deco, skyscraper, Phyrexian, and borderless treatments in Set, Draft, and Collector Boosters, in both traditional foil and non-foil
Consistency is the name of the game here - a Basic 'mon is easy to search for and get into play, meaning you can use it to draw extra cards rather than relying on supporters
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Using it in response to a kill spell can effectively counter it, permanents with protection can be very difficult to deal with, and there are a bunch more interactions out there to learn
If the Aura can't become attached to the creature (for example, if the creature has protection from black), the Aura will be placed into its owner's graveyard as a state-based action