In the cave of trials, I would only get the for titans for the badge and bragging rights (I only have bragging rights, still haven't finished in on Kong), because they are so slow and take FOREVER to come aid you in battle, even when they are fully upgraded. But, however, the card from the 5th Cave of Trials can be your best friend, and makes your experience a lot easier in the other cave of trials. The computer WILL get its titan before yours if in case your planning to see a titan vs titan deathmatch.
Cave of Trials 4- Lord of Shadows (Highest health, but lowest speed and a higher mana cost. He has a devastating 4-hit combo, if he ever finally makes it to the battle >_>) Cave of Trials 5 - Berserker Spell Card (Probably the most useful card in Cave of Trials. It makes all your attacks crit for a short period of time, meaning all your attacks hit 600+, and double of that if you have the x2 dmg spell card)
Cave of Trials 1 - You get the Fire Demon (Lowest health but he breaks through enemy ranks like butter)
Cave of Trials 2 - You get the Water Dragon (Higher health than the demon and good speed for a titan, and a nice 3-hit attack that sends people trapped in his attack flying back to their base)
Cave of Trials 3 - Thunder Dragon
(High health, but slow speed. He has a high damage ratio, and sends enemies flying off the screen, literally)
KEEP THIS COMMENT ALIVE: MJ - Destroy the grave in Jamaica (Mexico) Tank- kill Rambo in Qandahar (Middle East) Boomer Santa- Kill Santa in Nuunok (Greenland) Col.Sanders- Kill him in Kentucky (America) Ronald McDonald- Kill him in London (Europe)[also found in multiple other places] Venom - Kill Spider man in New York (America)
KEEP THIS COMMENT ALIVE!! MJ - Destroy the grave in Jamaica (Mexico) Tank- kill Rambo in Qandahar (Middle East) Boomer Santa- Kill Santa in Nuunok (Greenland) Col.Sanders- Kill him in Kentucky (America) Ronald McDonald- Kill him in London (Europe)[also found in multiple other places] Venom - Kill Spider man in New York (America)
MJ- Destroy the grave in jamaica (Mexico) Tank- kill Rambo in Qandahar (Middle East) Boomer Santa- Kill Santa in Nuunok (Greenland) Col.Sanders- Kill him in Kentucky (America) Ronald Mcdonald- Kill him in London (Europe)[also found in multiple other places] Venom - Kill Spiderman in New York (America) KEEP THIS COMMENT ALIVE!!
 "Epic War 3"){kind=icon}
 "Infectonator : World Dominator"){kind=icon}
 "Kongai"){kind=icon}