Even in competitive, an effect that removes all Ink but three from all Inkwells can be annoying to deal with or build around, especially since the Ink is returned to a player's hand, and Emerald/Sapphire is already one of the best discard decks around
Since the Altar turns that one Servo into two mana you're on your way to as many death, sacrifice, ETB triggers as you can handle, plus more colorless mana than you need
It gives the equipped dork +2/+2 and infect
Of course, Evolutionary Leap is also capable of leading us to some completely crazy decks
Red-Eyes Darkness Metal because the card is extremely good at creating big boards of dragons, and Snatch Steal as a very strong tempo removal option
Standard's three-year rotation keeps competitive play manageable even as the overall pool expands