first you have to look and find amulets in dungeon and village chests once you have one right click it and the titan inside will bind to you and become only usable by you also you will gain powers mostly just magic projectiles, magic lights, and feather falling.
Titans are mythical creatures living in amulets and legendary ones come in rings you can have as many as you want but they can die they normally would come back to the amulet but you can make them come back out and if they die the amulet breaks and its gone forever but they heal in their amulets. all titans and their amulets can be found here http://huntik.wikia.com/wiki/Category:Titans
If you use a Titan a lot they will gain experience and eventually evolve into a power bonded version it is much more powerful and will become a olden armored version and you will get buffs while it is out
The rings are only found in large dungeons and their are also magic weapons from mythology titans can also be found on their own and if you beat them their yours others are found hidden in blocks but will still drop their amulet like the other unowned ones and the rings tend to be eithier hidden in like 50 chests or are bosses that are insane to beat
this was just a fun idea i had i would be very happy if this became a reality