I have a few suggestions to make current Summoner easier to learn.

1) For spells that replace something (like Gemshine) when a certain summon is active, please update the spell descriptions to more clearly note what they replace and under what condition.

2) There should never be multiple spells on your hotbar with the same icon. At low levels, Ruby Ruin, Topaz Ruin, and Emerald Ruin share the same icon as Ruin. This is also true for Ruin II and Outburst. Please give those elementally-aspected spells icons different from something else on the hotbar, even if they are just pallete-swapped to look more red, yellow, and green. It is great that this is not a problem at max level.

3) It would be nice cosmetically if summons reflected your element phase a little longer. Perhaps rather than going back to neutral carbuncle after the initial attack, it goes back to the appropriately-colored carbuncle while you have gem charges.