first one is only doable if you use ashura mag cell or console mag cell and it wont have a pb (if im not wrong) - this is most of the time a minievent mag or donation mag
second one is doable (i use blueful huney till lvl 49, then switch to redria humar for twins and switch back again to huney to finish mag- for twins tellusis)
1. feed the ppp mag 19 antidotes (now it should be lvl 8 and one antidote away from evolving) - i recommend to do that in one sitting but i got it workin with a break/new room
2. dual log - trade the mag via tradewindow to your other character, then wait and feed it the last antidote ( now the mags stats should be: 99/200/800/0 = 0/2/8/0)
3. (not needed) i feed em some antypara to loose some def points. just to feel safer
4. now you check mag feeding chart: http://www.pso-world.com/sections.php?op=viewarticle&artid=1021
5. select the material which does not give def points. (most of the time antidote, which raises pow/dex)
if you wanna make it a tellusis/Gael Giel you need to feed it till you can give the mag dimates without gaining def points, cause pow>dex (pow must be higher than dex to evolve into kuma mag)
if you wanna make any other mags: try to check feeding chart + which id you should use for your mag. its easy to feed mags. you just need to learn one thing: feeding chart and ID-Evolution chart is your friend
i hope this helped.. if not pm me and ill help you out then!