Excerpt of the interview of Quinton Hoover in The Duelist 2 Magazine (Summer 1994), page 43 talking about Proposal
You can pull some shenanigans with Intruder Alarm, where you tap all your mana dorks for mana, use Bertas ability, make a 1/1 token, and untap everybody else, netting more mana each turn, and so on
The low cost makes it easy to hold up alongside other interactions
The stunning card proves to be a collectible with its beautiful artwork of the Dark-type Eevee evolution looking as though it is going to boop the moon
Captain Sisay's tutor requires her to tap, costs no mana, and puts the card into her hand
Collectors also prefer standard-sized cards because accessories remain affordable and easy to find