There is no shortage of ways to draw your second card a turn in blue, which will create a 1/1 Faerie with flying when you do
Concepts like signaling and counterdrafting are deep and complex, but the fundamentals are relatively easy
You win many counterspell wars, not to mention stealing ramp or card draw
Finale of Devastation lets you search your library for a creature with a mana value equal to X, where X is the amount of mana you put into the spells cost, and put it directly into play
Without the potential to be a free extra card they just don't compete well at all with the alternatives
1 Elsa, Spirit Of Winter (Enchanted) - $838.27 Set One, The First Chapter This Elsa card may not contribute to a low inkwell, but it can definitely change the entire game up during the round its played since you can legitimately limit any two characters of your choice by automatically exerting them and not letting them get ready for the next round