New dimension Dragons?

There should be a new dimension called _____(insert name here) its mountainous with different colored moutians ther is many dragons some of them are freindly and some are hostile the hostile ones are one color the freindly ones are a color but with a white underbelly the portal is made with a block with 1 block you stand in and you put dragon heads on the blocks you tame the dragons by gaining there truse by feeding them and fighting there enymies or riding them whent there trust bar reaches 100 there your pet and thell follow you like a wolf and attack you enmies and you can ride them (you need to craft a dragon saddle) also tammed dragons arent as powerful as other ones and you can only have a may of 3 and different types of dragons have different powers