I like this card very much. I particularly "love" (haha, no pun intended) the 'Ready' ability of the upgraded card. It befits the
element, considering SoR's mechanics, and it also has a low enough cost to be splash-able in a rainbow deck. The quanta production is good for
because time does not have any creatures/permanents currently that produce
quanta. I don't think that it is bad to have the upgraded version have an extra ability, and I think again that the 'ready' ability makes a lot of sense. I like seeing the creativity in making upgraded and unupgraded cards distinctively different.