Ramp spells let you hit Gishath as early as possible, so you pack in cards that help Gishath deal more damage by buffing its power, giving it double strike, or both
To be honest, its just a little abhorrent
To illustrate the difference, consider this Hardened Scales list: Creatures (18) Lands (20) Spells (22) 4 Welding Jar 4 Ancient Stirrings 4 Mox Opal 2 Throne of Geth 4 Hardened Scales 1 Evolutionary Leap 3 Animation Module Sideboard In this deck, you only want Throne of Geth after youve cast multiple creatures because putting a counter on a single creature is not worth sacrificing a resource
Runner-Up: Yidaro, Wandering Monster Green Playing lands off the top of the library, as with Courser of Kruphix, offers us what I call effective card draw
Early Magic tended to put a lot of things in blue that we'd later move elsewhere