The only thing Carbuncle does is Radiant Shield (when endwalker released it also has Searing Light, but that's now a regular action summoners do themselves), otherwise the job is now about summons and getting spells from them. It's a real shame. I don't expect them to go back to the old system but there needs to be a point to it being there, which is why in another thread I suggested it should at least do ranged auto-attacks and have a purpose in the rotation, like a buff it would give (automatically when it disappears or something) depending on which summon was just used (example: spell speed increased by Garuda phase, which would be useful when going into Ifrit phase), to make it so phases influence each other and Carbuncle is at the center of it.

It's really dumb the old pet commands are still here if they don't do anything though. I'm guessing they'll be reused by Beastmaster or something.