It's on each of you to be as honest as you can in evaluating your deck
If an effect instructs you to shuffle the card into your library (as opposed to "its owner's library"), you can do that
Once Upon a Time is at its best when the cards it can find play greatly differing roles, and a ramp deck is definitely one of the best ways to accomplish this
but a deck that can either control the top of its library or cares about face down spells can find value in a creature with two or more power for as little as two green mana
Regular: $3.61 Extended-Art: $4.95 Promo Pack: $7.62 Pre-release Promo: $9.26 Japan Showcase: $25.99 Fracture Foil: $96.38 Regular: $0.58 Extended-Art: $0.61 Promo Pack: $1.16 Pre-release Promo: $3.33 Finish Line-Art Traditional Foil: $6.14 Japan Showcase: $16.74 Fracture Foil: $106.42 Safe to say theres a pretty huge multiplier on how much the Showcase version is worth, and an even greater divide between those and the fracture foil versions
From the increase in powerful answer cards like Prismatic Ending and Force of Vigor basically KOing the archetype, to things like Ragavan putting absurd pressure on the early game, these types of decks have fallen to the wayside in Modern