Call Up instantly adds a Call Bead to the player's inventory. There is little reason to take Call Up with them; the player can use it as often as they can upon receiving it to max out their Call Bead stock, and then swap it out for another formula. Levelling up Call Up does nothing.
Call Up's usefulness however is questionable due to the fact it uses the two rarest alchemy ingredients in the game, which cannot be purchased from any vendor. Thus the player is likely to only get a few uses out of Call Up anyway.
Acid Rain - Atlas - Barrier - Call Up - Corrosion - Crush - Cure - Defend - Double Drain - Drain - Energize - Escape - Explosion - Fireball - Fire Power - Flash - Hard Ball - Heal - Lance - Laser - Levitate - Lightning Storm - Miracle Cure - Nitro - One Up - Reflect - Regrowth - Revealer - Revive - Slow Burn - Speed - Sting - Stop - Super Heal