I Can Edit My Tamed Beasts

Entry for #WPC 272. Please Vote Earth's new age arrived when mysterious portals started opening all over the planet, paving the way for powerful monstrous beasts to arrive on Earth. It was only after the majority human population was destroyed that they found the key to their salvation: Beast Taming. While Beast Tamers awakened to various types of Beast Taming abilities, each with its own strengths and weaknesses, Card-Type Beast Taming ability is despised by everyone as the most unreliable form of Beast Taming. However, Rudra has awakened to a variant Card-Type Beast Taming ability and is determined to become a powerhouse. Will he succeed in doing so? Or is it just another mortal reaching for the heavens in vain?