Soul Taming is a new feature which was added to Rappelz in Rappelz Epic 8.2, that allows you to tame almost every monster available in-game and have it fight by your side forever. If you want to learn about Boss Taming, please visit this site. The previous taming system, which still exists in-game, allows you to tame specific creatures only. Every creature tamed with the old system has fixed skills, attributes and roles in the game. The new Soul Taming system introduces new pets with a great variety of skills depending on the creature's attack type (tank, heal or damage dealer), random attributes, individual looks and much more. For example, if you tame a Giant Frog for the first time it may be a tank with high defense and health. If you tame another Giant Frog it may be a healer with great intelligence and a big mana pool. Another feature is that your creature will always look the way you tamed it. If you tame a green Giant Frog, it'll stay a green Giant Frog. If you tame a brown one, it'll stay brown. If it has 3 instead of 2 eyes, it'll have 3 eyes. And so on.
Currently, there are 4 different kinds of Soul Taming cards available: Basic, Special, Rare and Unique. Each of them exists in order to tame specific creatures. If you want to tame a Basic creature, make sure you have Basic Soul Taming Cards in your inventory, for example. It is not possible to tame creatures with cards that don't have the required rarity level. To make it easy for you to identify what card you need, check out the picture below.